Question

In the figure, AB=AC of the triangle ABC and angleBAC = 70°. Find the measurements of angleABC and angelACB.​

Answer 1

Answer:

As, AB=AC

∴ ∠ACB = ∠ABC = x (Suppose)   -(Corresponding angles of equal side)

Also, ∠ACB + ∠ABC +∠BAC = 180

or, x + x + 70 =180

or, 2x = 110

or, x = 55

So, ∠ACB = ∠ABC = 55°