Quiz (1 point)
Prove that:
The following properties may be helpful:
    - m∠ABC = m∠CBA
 - if (m∠XPW = 180) and (m∠YPZ = 180), then m∠WPZ = m∠XPY
 if the following are true:
- a = b
 - b = c
 
then a = c
Please write your proof in the table below. Each row should contain one claim. The last claim is the statement that you are trying to prove.