Question

Find the unknown angles in the figure​

Answer 1

Answer:

b=40

a=100

angle in the figure

Answer 2

Answer:

according to the isoseleoas triangle theorem angles opposite to the congruent sides are congruent .

$< b = 40(isoseleoas \: triangle \: theorem) \\sum \: measure \: of \: all \: angles \: of \: triangle = < a + < b + < c \\ = 180 \\ 40 + 40 + < a = 180 \\ < a = 180 - 80 \\ < a = 100$