### Home > GC > Chapter 2 > Lesson 2.2.1 > Problem 2-63

2-63.

Review the Math Notes Box in this lesson.

If

and, then what is?Use the Triangle Angle Sum Theorem:

Solve for

if,, and. Then find.Use the same method as part (a).

If

, what type of triangle is? If all of the angles have equal measure, then all of the sides have equal measure.