27. Given that ∠R is the included angle between the 2 congruent sides of the isosceles triangle △RST, and the measure of ∠R is 50°, what is the measure of ∠S ?

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

The apex angle of an isosceles triangle is 50°, then a base angle is (180-50)÷2 =65°