Topics
7. Angles & Triangles
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United States of America
Grade 8

Topic Review: Angles and triangles

Lesson
Practice

Introduction

We've just finished the chapter on Angles and Triangles. Let's do a review to ensure we have mastered each topic.

Angles and Triangles

In this chapter we covered the following topics:

  •  Parallel lines and transversals 
  •  Angles in triangles 
  •  Exterior angles of triangles 
  •  Apply the Pythagorean theorem 
  •  Distances in the plane 
  •  Problem solving with the Pythagorean theorem 

Outcomes

8.G.A.5

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.

8.G.B.6

Explain a proof of the Pythagorean theorem and its converse.

8.G.B.7

Apply the Pythagorean theorem to determine unknown side lengths in right triangles in real-world and mathematical problems in two and three dimensions.

8.G.B.8

Apply the Pythagorean theorem to find the distance between two points in a coordinate system.

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