Concept explainers
To find: The value of p .
Answer to Problem 63E
C 90
Explanation of Solution
Given information: SAT Practice: In parallelogram QRST,a = b and c = d .
Calculation:
Ask what you know about parallelograms that could help.
The angles are next to each other.
In a parallelogram, consecutive angles are supplementary. So,
Since,
This gives us,
Also, since
Thus,
C 90
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