Question

What is x? (Triangle Theorems)

1. x = 54
2. x = 9
3. x = 24
4. x = 144

Answer 1

2. x = 9

Explanation:

The sum of the measures of the angles of a triangle is 180°.

6x + 16 + 90 + 20 = 180

6x + 126 = 180

6x = 54

x = 9

Answer: 2. x = 9