Question
A quadrilateral ABCD is a parallelogram if:
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Answer
- $\angle\text{A} = 60^\circ, \ \angle\text{C} = 60^\circ,\ \angle\text{B} = 120^\circ$
Solution:
$\angle\text{A} = 60^\circ, \ \angle\text{C} = 60^\circ,\ \angle\text{B} = 120^\circ$
Opposite angles are equal and sum of adjacent angles are supplementary.
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