Question

Angles R and S are vertical angles. Angle R has a measure of (4x + 20). Angle S has a measure of 84. What is the value of x?

Answer 1

x = 16

Explanation:

Note that vertical angles are congruent, hence

4x + 20 = 84 ( subtract 20 from both sides )

4x = 64 ( divide both sides by 4 )

x = 16