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Home > CCG > Chapter 3 > Lesson 3.2.2 > Problem 3-66

3-66.

Final stop lightExamine each diagram below. Which diagrams are possible? Which are impossible? Justify each conclusion. Homework Help ✎

What properties do you know about the sides and angles in triangles?

  1. 3-66a diagram

    Since the figure in part (a) is a right triangle, it must satisfy the Pythagorean Theorem.

  1. 3-66b diagram

    Possible (the two lines are not marked as parallel).

  1. 3-66c diagram

    The sum of angles in a triangle is always .