# Angle Relationships Discovery Worksheets

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(3 MB|22 pages)
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1. This Angle Relationships Activity Bundle features hands-on, discovery-based lessons and games. Students will discover relationships involving complementary, supplementary, and vertical angles; corresponding, alternative exterior, and alternate interior angles formed when parallel lines are cut by a
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2. This eighth grade math bundle contains discovery worksheets, card games, task cards, card sorts, stations, scavenger hunts, and more! All activities are aligned to the eighth grade math Common Core State Standards. This is a subset of my 8th Grade Math MEGA (Growing) Bundle. It is offered for tea
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3. This eighth grade math MEGA (growing) bundle will eventually be a full curriculum. It currently contains all discovery worksheets, card games, task cards, card sorts, stations, scavenger hunts, and more! All activities are aligned to the eighth grade math Common Core State Standards.Check out the
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• Product Description
• StandardsNEW
In these three Common Core-aligned angle relationships discovery worksheets, students will be able to determine a missing angle measure given interior and/or exterior angles of a triangle, identify angle relationships when parallel lines are cut by a transversal, and explain the angle-angle criterion for similarity of triangles.

Included:
-3 two-page worksheets (with answer keys)
-Vocabulary Sheet organizing 16 geometry-related words (4 different versions)
-Teacher's Guide with CCSS, objectives, materials, and procedure

Worksheet #1: Discovering Interior and Exterior Angle Relationships
Given visual representations, students will understand why the interior angle sum of a triangle is the same as the sum of the angles creating a straight line. In this same activity, students will go on to deduce why given an angle in a triangle, its exterior angle will have the same degree measure as the sum of the other two angles in the triangle.

Worksheet #2: Discovering Angle Relationships when Parallel Lines are Cut by a Transversal
In this activity, students will understand that given parallel lines cut by a transversal, every angle is either congruent or supplementary to the other angles formed in the figure. Students will be able to identify angle relationships including alternate interior angles, alternate exterior angles, corresponding angles, vertical angles, adjacent angles, and same-side interior angles. Students will understand which of these relationships result in congruent pairs of angles and which of these relationships result in supplementary angles.

Worksheet #3: Discovering Angle Relationships and Similarity
Students will review their knowledge of relationships between corresponding side lengths and corresponding angles when polygons are congruent and when they are similar. Then they will explore three triangle relationships that will lead them to conclude the angle-angle criterion for triangle similarity.

Angle Relationships Vocabulary
There are four versions of the vocabulary sheet included:
Vocabulary Only: This version is great for your accelerated or higher level courses with students who are strong note-takers. This may also be a great way to review by asking to students to fill in the information at the end of the unit.
Vocabulary and Definition: I use this version with my standard level eighth grade classes. I read the word and definition, give a brief explanation, then we all draw in the example. This provides a great visual without a lot of writing.
Vocabulary, Definition and Example: Great for students who require filled in notes or have been absent.
Definition and Example: Alternative copy for those who require minimal writing. Students only need to fill in the vocabulary word and they have a great visual already provided. This version could also be used as a good review activity.

This product is part of the Discovery-Based Worksheet Series. Discovery-Based Worksheets have been specially designed to engage students in learning that moves beyond traditional skills practice. Students will develop a deeper understanding of the big idea and will make connections between concepts. These worksheets make a great introduction to a new topic or summary at the end of a lesson or unit. Try one today!

You might also like:
Angle Relationships Scavenger Hunt
What’s Your Angle: Solving for Angle Measures
Old Math Guy: Angle Measures
Christmas: Angle Relationships

Teach 8th grade math? Consider this incredible deal: 8th Grade Math MEGA (Growing) Bundle

This resource is also included in the 8th Grade Math Discovery and Hands-On Activity Bundle.

This resource is included in the Angle Relationships Discovery and Practice Activities Bundle.

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The purchase of this product entitles a single user to reproduce the resource for classroom use only. A multiple license can be purchased if you wish to share with other teachers. The product is for educational use only. The product may not be used for commercial purposes or resold in any form. It cannot be uploaded to the Internet, including school websites.
© Free to Discover (Amanda Nix)

Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles. For example, arrange three copies of the same triangle so that the sum of the three angles appears to form a line, and give an argument in terms of transversals why this is so.
Total Pages
22 pages
Included
Teaching Duration
3 days
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