Question

What type of theorem would be to this

Answer 1

Supplementary Angles Theorem

Explanation:

The sum of m∠1 + m∠2 = 180°

x + 10 + 3x + 18 = 180 (Set up equation)

4x + 28 = 180 (Simplify the left side)

4x = 152 (Subtract 28 from both sides)

x = 38° (Divide both sides by 4)