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showing 1-52 of 1,411 results

Angles of Triangles Task Cards (Triangle Sum Theorem, Exterior Angle Theorem)
Students will practice finding missing angle measurements in triangles through this task card activity. Students must have an understanding of the Triangle Sum Theorem, Exterior Angle Theorem, supplementary angles, compl

This foldable is organized into the following three tabs:
1. Vocabulary (interior angles, exterior angles, remote interior angles)
2. Triangle Sum Theorem
3. Exterior Angle Theorem
It serves as a great introduction to the lesson, a class work assignment, homework assignment, or centers activity.

This is a maze of 19 triangles with an exterior angle that students must use the
Exterior Angle Theorem to solve for one of the following:
• An exterior angle when given the 2 remote interior angles
• A remote interior angle when given the exterior angle & the other remote interior angle.
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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

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Task cards are a wonderful way of reviewing and allowing students the opportunity to work in partners or collaborative groups! This product includes 16 task cards (perfect for one or several class periods) that focus on using angle relationships to determine an unknown angle measure. Task cards are

This is a maze of 11 triangles with an exterior angle that students must use the
Exterior Angle Theorem and their ability to set up & solve equations to solve for x.
This self-checking activity helps students strengthen their skills in solving equations involving the exterior angle theorem.

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This foldable provides definitions and practice identifying corresponding parts (angles and sides) as well as writing congeuence statements for triangles. Within the foldable students will need to apply these concepts (and some algebra) to find a missing angle or side measures.
This is a great way

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This 8 question sheet provides students with practice applying the Triangle Sum Theorem & The Exterior Angle Theorem, through the use of algebra.
I have options where you may choose to include the QR codes, or not.
My students really enjoy using QR codes. They look at the activity as more o

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This video lesson introduces students to the trig ratios and teaches them how to find the sine, cosine, and tangent of a right triangle.
In particular, your students will learn...
* That trigonometry means triangle measure
* What three trig ratios (sine, cosine, and tangent) represent
* How to f

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In this activity, students will practice applying the Exterior Angle Theorem as they color to reveal a beautiful, colorful pattern! Students will find measures of indicated angles or variables and then color their answers on the mandala according to the color given.
This no-prep activity is an e

Folder Flips are a great way to store a ton of information in one little folder! Students will learn oodles of geometry skills and have fun while they're at it.
What's included in the Triangle Sum Theorem & Exterior Angles Theorem pack?
*An awesome, easy-to-follow lesson (18 pages)
*7 quick ac

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In this super secret number puzzle, students will practice working the triangle sum theorem and the exterior angle theorem.
Students find the answers to each of the eleven questions and then add their answers together – this is the super secret number. After a bit of time, I tell them what the sup

This quiz covers parallel lines intersected by a transversal, exterior and interior angles of triangles, and angle-angle similarity of triangles, particularly focusing on writing and solving equations when given angle measurements containing variables.
Part of the TEKS quiz series, available for al

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This is a set of two guided, color-coded notebook pages for the interactive math notebook on the Triangle Exterior Angle Theorem.
Includes color-coded examples and diagrams of triangle exterior angle vocabulary and the Triangle Exterior Angle Theorem.
Includes an investigation of the relationshi

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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

In this activity, students will use the triangle exterior angle theorem to solve problems.
#1 - 3 are simply numeric.
#4 - 9 require algebra to solve for x.
#10 - 15 require algebra for first solve for x, and
then find the missing angle measure.
Then, they will color the design by the colors list

Struggling to find good examples of geometric proofs in your textbook? These detailed proofs will help you and your student become experts!
This particular packet includes 8 proofs that all use the vertical angles theorem. Other topics include angle addition, substitution, supplementary angles, e

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Included in this zip folder are 3 Power Point files. 1 is an intro and 2 are assignments. A brief description of each"
The Intro is 21 slide Power Point presentation over remote interior angles and exterior angles of a triangle. At the end of the presentation, the student should realize the sum

Triangle Exterior Angle Theorem - Task Cards
This is a set of 10 task cards involving the triangle exterior angle theorem.
Concepts included in this task card set are:
Using the theorem to determine the angle measures of interior and exterior angles.
Using algebra to solve problems involving the

Bring to life the traditional practice class or homework assignment with some global competency and diversity! While your students practice with the exterior angle theorem, they can learn about the computer science pioneer, Margaret Hamilton!
Person Puzzles are designed to highlight individuals wit

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Students practice finding the exterior angle of a triangle by using the Exterior Angle Theorem. 18 pairs of matching cards- one half the cards has a detailed diagram of a triangle with the angle measurement desired and the other half of the cards have a measurement.
Students can work in pairs, smal

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

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This purchase includes a PowerPoint, video lesson and video notes on the triangle exterior angle 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 fact

This is a handout that is created as a quick review to cover triangle sum theorem and exterior angle theorem. I created this activity as a review before end of course/end of school testing. I will have students fill out what they remember without notes and review with the entire class what they do n

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Day 9 in a series of Powerpoint Presentation lessons in High School Geometry. File is editable but requires MathType (trial version can be downloaded for free). Introduces Right angles and Complementary angles and presents exercises and proofs in an interactive manner.

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Exterior Angle Theorem foldable with definitions, notes, guided practice problems, and independent practice work time. Used in interactive notebooks during class or can be used as homework or scaffold.

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Included in this zip folder are 3 PDF files. 1 is an intro and 2 are assignments. A brief description of each"
The Intro is 21 page PDF file over remote interior angles and exterior angles of a triangle. At the end of the presentation, the student should realize the sum of the 2 remote interior

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Included in this zip folder are 3 SMART Notebook files. 1 is an intro and 2 are assignments. A brief description of each"
The Intro is 21 slide SMART presentation over remote interior angles and exterior angles of a triangle. At the end of the presentation, the student should realize the sum of

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Geometry Wall and Poster : Angles Theorems and Postulates
This is a PDF file. Contact me for a free PowerPoint version of this product if you like.
Right Angles
Straight Angles
Congruent Supplements
Congruent Complements
Linear Pairs
Vertical Angles
Triangle Sum
Exterior Angle
Base-Angle Theorem (

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Students work in pairs or groups of three to determine the missing angle measures in two figures that are composed of interlocking triangles. Students must be able to apply the Linear Pair Postulate, Vertical Angle Theorem, Triangle Sum Theorem, and Exterior Angle Theorem in order to determine the

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Here are some notes and practice with the introduction of the exterior angle theorem. This is the relationship between the exterior angle in a triangle and the sum of the remote interior angles.

This can be used for a number of things.
Exit Ticket
Quiz
Homework
Assessment
Group Work
Partner Check
Please see my other items and don't forget to follow me!

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Introduce the Vertical Angle Theorem with notes and practice problems. Just print the recording sheet and cut out the cards and you are all set for a vertical angle cooperative learning activity!

Google Slides Digital Interactive Notebook. The notebook is everything beneficial of an interactive notebook without all the paper, glue, scissors, etc.
Includes :
Triangle Vocabulary
Triangle Angle Theorem
Exterior Angle Theorem
Equations with Angle Theorems
Angle Theorem Discovery Activities

Includes: Triangle Sum Theorem, Exterior Angle Theorem, Angle Bisector Theorem, Triangle Proportionality Theorem, Triangle Inequailty Theorem, Triangle Angle Relationships, Corresponding Angles, Supplementary Angles, Vertical Angles, Linear Pairs, Alternate Exterior Angles, Alternate Interior Angles

Students practice finding the measures of angles using the Exterior Angle Theorem by first writing an equation, solving for x and then using that value to find the measure of the angles. This is a great activity that will challenge your students. Included is 18 pairs of matching cards, half of the

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An easy-to-implement activity to get 'em out of their seats while learning Geometry (and Algebra) in a structured and meaningful way!
A fun & interactive math quest for students to uncover the mysteries of:
Parallel Lines, Transversals, and all Angle Relations including: Vertical, Corresponding

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Note Template for Half Angle, Double Angle, Sum and Difference of Angles. Teacher can use as a homework assignment or teacher led notes.

Great collaborative activity where students practice finding the exterior angle of triangles.. Partner A works out his problems while Partner B works hers. When they have finished, they compare answers. If the same--move on, if different, they work together to review their work and find the error.

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This bundle consists of the following:
Logic and Reasoning Test (includes inductive, deductive reasoning, logic, theorems, algebra proofs, etc)
Logic and Reasoning Review
Logic and Reasoning Quiz
Logic and Reasoning Vocabulary

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Boom Cards™ are a great way for students to practice finding the measure of exterior angles and assessing their understanding.This is a quick formative assessment. This set of Boom Cards features 40 different Digital Self-Checking Task Cards. (No printing, cutting, laminating, or grading!)
These

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I CAN Math Games are the perfect way to make math fun! This 8th Grade Math Game focuses on the Triangle Sum Theorem and Exterior Angle Theorem, and provides students with practice in the form of multiple choice or short answer questions. QR codes (optional) make th

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Day 10 in a series of Powerpoint Presentation lessons for High School Geometry. File is editable but requires MathType (trial version can be downloaded for free). Introduces Supplementary and Vertical angles and presents some simple exercises and two-column proofs in an interactive manner.

Instructions to help you or your students explore the Triangle Exterior Angles Theorem with the Geometer's Sketchpad.

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This video explains in details about inscribed angle theorem of Circle.

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This video shows that alternate interior angles formed by parallel lines cut by a transversal are congruent.

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This video shows that alternate exterior angles formed by parallel lines cut by a transversal are congruent.

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This video shows that consecutive interior angles formed by parallel lines and a transversal are supplementary.

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Exterior Angle Theorem
- Lecture Notes
- Worksheets
Teach less, Learn more
Viva Math!

This 8th Grade math spiral review resource can easily be used as spiral math HOMEWORK, spiral math WARM UPS, or a DAILY MATH REVIEW! This spiral math review was designed to keep math concepts fresh all year and to simplify your homework or warm up routines. All pages are 100% EDITABLE

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

Logic and Proof (Geometry Curriculum - Unit 2)
This bundle contains notes, homework assignments, three quizzes, a study guide and a unit test that cover the following topics:
• Inductive Reasoning and Conjectures
• Compound Statements and Truth Tables
• Conditional Statements
• Related Conditiona

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Proof Writing in High School Geometry (Two-Column Proofs) - Introduction:
This full unit pack (108 pages including answer keys) has all the resources you need to teach your Geometry students how to write proofs. It begins at the most basic level with the properties and postulates that will later b

showing 1-52 of 1,411 results