Question

Drag an answer to each box to compete this paragraph proof.

Answer 1

The answers are

"Using the substitution property:

"x = 15"

Explanation:

in the first case, you are substituting the equivalent expresions

of m_P, m_Q and m_R. You are not applying any angle postulate or distributive property.

We know as a fact that the last answer is

"x = 15" because the problem tells us that

12x = 180, so

x = 180/12 = 15