Instructional Activity# Tear It Up

Lesson 15. Unit 1. Grade 8 Open Up Resources

Open Up Resources25 min(s)

This Instructional Activity is a part of the Lesson 15, Unit 1, Grade 8. In this activity, students experiment with the converse: If we know the measures of three angles sum to 180 degrees, can these three angles be the interior angles in a triangle? Students cut out three angles that form a line, and then try to use these three angles to make a triangle. Students also get to create their own three angles from a line and check whether they can construct a triangle with their angles.