Question

How to find a in this ?​

Answer 1

see explanation

Explanation:

(a)

The triangle has 2 congruent sides and is therefore isosceles.

(b)

The base angles of an isosceles triangle are congruent, thus

a =
`(180-52)/(2)` =
`(128)/(2)` = 64

(c)

a = b = 64 ( alternate angles )