Answer:
Transitive property is used in step 4.
Step-by-step explanation:
Transitive property states that if

Here we have

Answer:
∠ A = 50°
Step-by-step explanation:
In a parallelogram, consecutive angles are supplementary, sum to 180°
∠ A + 130° = 180° ( subtract 130° from both sides )
∠ A = 50°
Answer:
None of the listed
Step-by-step explanation:

Answer:
30
Step-by-step explanation:
5+5+5+5+5+5 =
30