Question

In∆abc AB=AC and angle a=50° find angle b and c

Answer 1

Answer:

ok,

sum of the angles of triangles is 180°

< B = < C ...... (angle opposite to congruent sides are congruent)

<A + < B + < C = 180°

< A + < B + < B = 180°

50 + < 2B = 180

< 2B = 180 - 50

< 2B = 130

<B = 65°

Therefore, Angle B and Angle C = 65°