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Home > INT2 > Chapter 8 > Lesson 8.4.3 > Problem 8-106

8-106.

Use the angle relationships in each of the diagrams below to solve for the given variables. Show all work.

The sum of the interior angles in an -gon can be found by calculating .

  1. Start by determining the measures of the base angles of the isosceles triangle.

  1. The sum of the two unlabeled angles is . Why?