A parallelogram has an interior angle measuring 81°. Which MUST also be the measure of an interior angle of the parallelogram? A) 9° B) 19° C) 49° D) 99°

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asked Dec 11, 2020 171k views

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A parallelogram has an interior angle measuring 81°. Which MUST also be the measure of an interior angle of the parallelogram?

A) 9°
B) 19°
C) 49°
D) 99°

Mathematics
high-school

Elie asked

by Elie

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D) 99°, interior angles in parallelograms are supplementary meaning they add up to 180°. 180°-81°=99°

Andrew Kirkegaard answered Dec 17, 2020

by Andrew Kirkegaard

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