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Home > CCG > Chapter 6 > Lesson 6.2.4 > Problem 6-88


Multiple Choice: The measure of  at right is:

  1. none of these

Triangle A B C. At vertex B a line extends outwards to create line segment B D. Angle A is 74 degrees and angle C is 79 degrees.

Find angle by using the Triangle Sum Theorem. How can you use that to find the measure of ?