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showing 1-52 of 891 results

Students practice using the Triangle Angle Sum & Exterior Angle Theorems to find missing angles in triangles.
100% Ready to Go! Just PRINT & PRACTICE!
Included:
- 6 Practice Problems
- Answer Key
Connect with The Blakenator
Be sure to follow my TpT store by clicking on the green ‘Follow

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Notes to introduce/review the Triangle Angle Sum and Exterior Angle Theorems. There is space at the end for students to summarize what they learned about each theorem.
In the riddle activity, student practice using the theorems to find missing angle measures.
100% Ready to Go! Just PRINT& TEACH

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This is four 8th Grade Common Core guided, color-coded notebook pages for the Interactive Math Notebook on the concept of the Triangle Angle Sum Theorem and Exterior Angle Theorem.
Included are color-coded diagrams of the Triangle Angle Sum Theorem and Exterior Angle Theorem.
Also included are exa

This is a task on the concept of the Triangle Angle-sum Theorem and angle pair relationships.
This is a 4 page team task. In this task students will take turns as "Team Mathematician". Students will identify angle pair relationships and color-code diagrams. Students will find angle measures using

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This is a set of two guided, color-coded notebook pages for the interactive math notebook on the Triangle Angle-sum Theorem.
Includes color-coded examples and diagrams on classifying triangles, and the Triangle Angle-sum Theorem.
Includes an investigation of the sum of three angle measure in a

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This foldable is perfect for an interactive math notebook. It provides critical vocabulary and examples for the triangle angle sum theorem and the exterior angle theorem, which includes remote interior angles. Pair this with the "Triangle Angle Sum Color by Number Activity" found on my page for a gr

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This product includes 14 practice problems, a color by number picture, directions, and an answer key. Problems include interior angle practice and using the remote interior angles to find an exterior angle. There is a wide variety of difficulty levels included, ranging from basic numbers to algebrai

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I love to use glyphs in my class and the students love them too. Glyphs are pictorial representations that are often used in elementary schools.
To use this glyph, I hand the worksheet out to my students and have them complete it. Their answers will help them create a jack-o-lantern out of colored

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This worksheet contains 20 problems that focuses on using the Angle Sum Theorem to solve Algebraic equations.
Each question corresponds to a matching answer that gets colored in to form a symmetrical design. Not only does this make it fun and rewarding for students but it also makes it easy for s

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This is a task on the concept of the Triangle Angle-sum Theorem and Angle Pair Relationships.
This is a 4 page team task. In this task students will take turns as "Team Mathematician". Students will identify angle pair relationships and color-code diagrams. Students will find angle measures using

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Geometry students need practice with identifying and naming triangles (acute, scalene, isosceles, etc.) and they also need practice using the triangle sum theorem and exterior angle theorem.
Instead of "chalk-and-talk," I use this worksheet to help my students through these concepts in class, as th

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Every kid likes to color, right?!?
This activity gives your students the opportunity to color as they do math! The format of the activity allows self-checking of the work as they practice working with the Triangle Angle Sum Theorem (the 3 angles of a triangle always sum to 180 degrees). This makes a

Triangle Angle Sum Theorem Domino Puzzle
This document contains TWO domino puzzles! Both puzzles test knowledge of triangle congruence theorems: SSS, SAS, ASA and AAS. Puzzle 1 includes HL while Puzzle 2 uses "not enough information" in its place.
You can print a domino page per student, or pair

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This worksheet contains 20 problems that focuses on finding the missing angle given the other two angles (no Algebra involved). Many problems contain decimal angles and solutions.
Each question corresponds to a matching answer that gets colored in to form a symmetrical design. Not only does this

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This is a set of two student notebook reflection pages for the Interactive Math Notebook on the Triangle Angle-sum Theorem and the Triangle Exterior Angle Theorem.
Includes:
Concept Connection: Draw two example triangles with two given angle measures and one missing angle. Use color coding to find

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This is a set of 10 task cards involving the triangle angle sum theorem.
Concepts included in this task card set are:
Determine the measure of interior angles of triangles.
Write and solve equations involving the interior angles of triangles.
.
Task cards are a very flexible resource. They can be

Combine practice of the Triangle Angle Sum Theorem with learning about Pop Culture Subjects... in this case, Pablo Picasso.
Fifteen problems with diagrams, which may be used as-is, or an answer sheet is also included that may be used.
Solutions included.

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With Disney Movie Fun worksheets, students solve 8 problems relating to specified topics. A correct response will answer a trivia question from a certain Disney movie. Always a student favorite!
Answer key included!
If you like this activity, check out
Disney Movie Fun: Cinderella-Distance & M

This purchase includes a PowerPoint, video lesson and video notes on the triangle angle sum theorem. The PowerPoint is designed for whole classroom instruction while the pages may be individually printed as worksheets.
Common Core Alignment
8.G.A.5
Use informal arguments to establish facts abo

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This review poster can be given to students after they are taught the Triangle Angle Sum Theorem. I give this to my students as a review sheet. I have them glue this in the interactive notebook.

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This worksheet is intended to replace a lecture on types of triangles (scalene, isosceles, equilateral, obtuse, right, acute) and the exterior angle theorem.
I start out class with a 15-minute "mini-lesson" that goes over the basic ideas, and then I set them out to work on this worksheet together.

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This product includes:
(1) Video lesson with notes on the triangle angle sum theorem
Topics:
What is the triangle angle sum theorem?
Writing & Solving equations involving the triangle angle sum theorem
(1) Google Form activity assessing the content of the video lesson.
The video and Google F

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This product includes a foldable with suggested notes, worksheet, and answer key covering Triangle Angle Sum – CCSS.8.G.A.5.
In my class, I use the left hand side of the notebook for guided notes with foldables, while the right-hand side is reserved for individual practice work. There is a one-side

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In this activity students will practice using the triangle angle sum theorem to find missing angles in a triangle.
Just working problems from a simple worksheet becomes redundant for students. Also, so much time is spent the next class period checking the sheets for accuracy. In this activity stud

Finding Missing Angles in Triangles.
This activity will allow your students to practice finding missing angles in triangles using an appealing format.
Students will also use their knowledge of complementary and supplementary angles while finding missing angles in triangles.
This product contains

Students use an 'I have...Who has?' format to practice finding the third angle of a triangle given two measures.
Teaching note: I rarely use this activity whole group. I prefer to make multiple sets and have students (in small groups/partners/alone) build a 'loop' of cards on their desk. They k

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Congruent Triangles (Geometry Curriculum - Unit 4)
This bundle contains notes, homework assignments, three quizzes, a study guide and a unit test that cover the following topics:
• Classifying Triangles by Sides and Angles
• Angles of Triangles: Triangle Angle Sum Theorem and Exterior Angle Theor

This is a whole years worth of interactive notebook material that is very organized and engaging. CHECK OUT THE PREVIEW TO SEE HOW AMAZING THIS NOTEBOOK IS!
The notebook has 5 units (6 including notebook starter). The units include:
Unit 0 - Notebook Starter
Unit 1 - The Number System
Unit 2 - Ex

Bring 8th grade math to life with these easy-to-use, color-coded word wall cards aligned to the Common Core Standards for 8th grade math. Every card has an example and a simple definition to help students understand eighth grade math vocabulary. The color-coding makes it easy to stay organized and a

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Geometry Angles of Triangles Riddle Worksheet
This riddle worksheets covers the various angles inside and outside of triangles. These angles include the angle sum theorem, the isosceles triangle theorem and exterior angle theorem.
Students are asked to set-up and solve linear equations to find th

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This is a coloring activity for a set of 12 problems on the exterior angle sum theorem. The exterior angle is equal to the sum of the two remote interior angles. Problems 1 - 6 are easy and problems 7 - 12 are challenging where algebra is reinforced.
This product is included for free in the trian

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Maze A - (easy)
Maze B - all isosceles and equilateral triangles (medium)
Maze C - algebra 1 will be needed since there are some expressions for some of the angles (harder)
Practice 1 - 10 - all exterior angle theorem problems
This product is included for FREE in the Triangle Sums Bundle.
Posted

This set of 18 task cards give students practice finding unknown values by using their knowledge of:
triangles
the sum of angles in a triangle = 180 degrees
and
algebraic equations- writing and solving
combining like terms
each task card has a different triangle, and has each angle labeled with a v

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Four Quadrant Graph (Grid 15 x 20 Portrait)
Uses fractional points with 1/2, 3/4, and 2/3 [ex.: (4 1/2, 6) ]
This coordinate graphing project is fun for the student, makes a great bulletin board display and is ideal for reviewing coordinate graphing skills. It can also be used for a c

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Angles of Triangles Thanksgiving Riddle Worksheet
This riddle worksheets covers the various angles inside and outside of triangles. These angles include the angle sum theorem, the isosceles triangle theorem and exterior angle theorem. Students are asked to set-up and solve linear equations to find

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This is a coloring activity for a set of 12 problems on the exterior angle sum theorem. The exterior angle is equal to the sum of the two remote interior angles. Problems 1 - 6 are easy and problems 7 - 12 are challenging where algebra is reinforced.
This product is included for free in the Triangl

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Students will use a cut/paste activity to discover the relationship between the interior angles of a triangle. By cutting away the angles and pasting them onto a line, they will be able to recognize that the angles are supplementary/ their sum is 180. They will summarize that relationship at the b

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Hello Math Teachers! Worksheets on facts about angle sum and exterior angles of triangles including angles created by parallel lines, similar triangles, the sum of the angles of triangles, and supplementary angles. I use it with my 8th grade PreAlgebra and remedial math classes as a class assignment

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This Power Point Presentation provides students with 10 multiple choice practice problems, applying the Angle Sum Theorem & the Exterior Angle Theorem. You may use this with clickers (Turning Point), if you have them, or without. A PDF option is available also.
The questions build in diffic

14 Practice Triangle Angle Sum Theorem problems - requiring Algebra to solve - with Skittles Trivia to grab the attention of your students. Included is a separate sheet where students can show their work to use if you would like. Solutions also included.
Please see the preview file for a complet

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Students use this hands-on activity to discover both the triangle Interior Angle Sum Theorem and the triangle Exterior Angle Theorem. Triangles will be cut and parts of them will be pasted to discover these theorems, so scissors and some sort of pasting supplies will be used. I recommend print the "

INCLUDES VIDEO INSTRUCTIONS
Takes students step by step through the process of Solving for the variable then calculate the angle measure.
Begin with the algebraic representation.
Match it to a visual using algebra tiles.
Formulate and solve an equation.
Calculate the angle measures.
Identify t

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Practice sheet includes:
Supplementary and complementary angles
Missing angles of triangles and quadrilaterals
Determining if three side lengths could make a triangle or not
Interior angle sum of quadrilaterals

** This activity is available as a "GOOGLE INTERACTIVE" product HERE**
✐ This product is a NO PREP- SELF CHECKING activity that engage students in "Finding the missing angle in a triangle given the other two angles".
In this activity, students are asked to:
☑ Add the measure of the given two angl

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Geometry Unit 4 Triangles Classify Sum and Remote Exterior Worksheet
Students will practice skills classifying triangles by angles and sides, find triangle interior sum, and solving remote exterior angles.
Buy the Unit 4 Triangles BUNDLE and SAVE!

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This foldable includes identifying different triangles and defining each with examples. It also includes the definition of the Triangle Angle Sum Theorem with examples with and without algebra. It can be used as an introductory lesson or a review lesson.

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This is a discovery / exploration geometry lesson where students will discover the Polygon Interior-Angle Sum Theorem by using protractors to find the sum of the measures of the interior angles of polygons and drawing the number of triangles from one vertex. This can be done individually or coopera

** This activity is available as a "GOOGLE INTERACTIVE" product COMING SOON ---
HERE IS WHATS AVAILABLE AT THIS TIME**
✐ This product is a NO PREP- SELF CHECKING activity that engage students in "Solving for x given the angle measures of a triangle".
In this activity, students are asked to:
☑ Fi

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Tired of the same old task cards? Are you trying a new blended classroom? Need help integrating technology into math? May be your school is moving to one-to-one devices... Here is a chance to integrate technology and still provide a rigorous problem solving activity!
This download comes with direct

In this activity, your students will create an interactive foldable that includes a proof of the Triangle Angle Sum Theorem. This was designed for students to glue into their interactive notebooks. This content falls within both 7th and 8th grade Common Core Math Standards.

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This document provides a foldable for students to glue into their notes that helps them recognize how to find the interior angle sum of any polygon by splitting it into triangles. This hits 7th and 8th grade geometry common core math standards. There is a picture included of how I used this in my cl

Vertical Angles and Angle Sum Theorem Proofs Lesson Materials (Guided Notes, Classwork, & Homework):
These 6 student worksheets will help your students learn how to prove that vertical angles are congruent and that the sum of the interior angles in a triangle sum to 180 degrees. These lesson ma

showing 1-52 of 891 results