Question

Please tell me this question​

Answer 1

Step-by-step explanation:

We know that sum of all angles of a triangle is 180°

angle ABC + angle BAC + angle ACB = 180°

x + 2x + x+20° = 180°

4x + 20° = 180°

4x = 180° - 20°

x = 160° / 4

x = 40°

Now,

angle ABC = 40°

angle BAC = 80°

angle ACB = 60°

Now,

angle EAB = angle ABC

angle FAC = angle ACB

{ alternate angles bacause EF is parallel to BC }

Therefore,

angle EAB = 40°

angle FAC = 60°