The angle measure of base angles of an isosceles triangle are represented by x and the vertex angle is 3x+10. Find the measure of base angle.

A 112°

B 42.5°

C 34°

D 16°

Solution

Correct Answer: Option C

যেহেতু সমদ্বিবাহু ত্রিভুজ ,
সেহেতু x+x+3x+10=180⁰
বা, 5x=170⁰
x=34⁰