Let's say that you are given the following information:

Supplementary angles are 2 angles whose sum is 180°.
 ∠A and ∠B are supplementary angles.
 m∠A = 5x  5 and m∠B = 4x + 20.
Which of the following statements is true concerning ∠A and ∠B? Justify your answer.
 m∠A = m∠B
 m∠A = 2( m∠B)
 m∠A > m∠B
 m∠A < m∠B
In the diagram below:
 Lines p and q are parallel.
 Line t is a transversal that passes through p and q.
 m ∠a = 5x and the m ∠b = 3x  12
Which of the following statements are valid? Justify your answer.
 ∠a and ∠b are supplementary angles.
 m∠a = m∠c
 m∠d = m∠h
 ∠e and ∠f are complementary angles.

∠c and ∠g are corresponding angles.
 m∠h = 24°