SOLUTION: ABCD is a parrellelogram in which one angle is 120 . Find other three angles?

Question 1085821: ABCD is a parrellelogram in which one angle is 120 . Find other three angles?

Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

A parallelogram is quadrilateral comprised of two pairs of parallel lines.
Opposite angles are congruent.

if ∠ �, then ∠ � too since they are opposite angles
same is with ∠ and ∠ ;∠
since the sum of all angles is �, we have
∠ �
∠ �
∠ �
∠ � =>∠ �

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