Question

What is the measurement of angle A. Enter your answer in the box

Answer 1

`\displaystyle\boxed{60^(\circ)}`

Explanation:

The vertical angles at E are the same and are included in both triangles ABE and CDE. Since the sum of angles of a triangle is 180°, the sum of the angles at A and B will match the sum of the angles at C and D. That is, when either sum is added to the angle at E, the result will be 180°.

A = (C+D)-B = (43 +35 -18)°

A = 60°