Question

09. Find the value of x according to the data given in the diagram.

Answer 1

x = 50°

Explanation:

The lower right angle in the triangle = 40° ( alternate angle )

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the 2 angles from 180 for x , that is

x = 180° - (90 + 40)° = 180° - 130° = 50°