Question

A, B & C lie on a straight line.

D, B & E lie on a different straight line.
∠
CBE = 40°.
Work out the angle marked
x

Answer 1

CBE=40=ABD

x+90+40=180

add

x+130=180

x=50

Hope This Helps!!!

Answer 2

x = 50°

Explanation:

∠ DBA = ∠ CBE = 40° ( vertically opposite angles )

The sum of the angles in a triangle = 180° , then

x + 40° + 90° = 180°

x + 130° = 180° ( subtract 130° from both sides )

x = 50°