### Home > INT2 > Chapter 3 > Lesson 3.1.5 > Problem 3-63

3-63.

Use the geometric relationships in the diagrams below to solve for .

This is an isosceles triangle. Are there any special qualities about isosceles triangles that you know?

Base angles in an isosceles triangles are congruent.

then take .

Both base angles will be.

Both base angles are

. See part (a) for help.