5, Lesson 16, Unit 1, Grade 8, OpenUp icon
Instructional Activity

Every Triangle in the World

Lesson 16. Unit 1. Grade 8 Open Up Resources

Open Up Resources15 min(s)

This Instructional Activity is a part of the Lesson 16, Unit 1, Grade 8. In this activity, rather than building a complex shape from a triangle and its rotations, students begin with a triangle and a line parallel to the base through the opposite vertex. In either case, they need to analyze the given constraints and decide on a path to pursue to show the congruence of angles.

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