Question

How do I do this problem?

Answer 1

To solve the problem, we can use the angle sum of triangle,where the addition of all triangles would be equal to 180°.

In this case, 90° is already given, hence we can use the rest angles with unknown to set up equaiton:

90° + 2x + 3x = 180°

2x + 3x = 180°- 90°

5x = 90°

x = 90°/5

x = 18°

Therefore, x= 18°.

Hope it helps!