Question

One angle of a parallelogram in 90°what are the measures of the angles

Answer 1

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If one angle of the parallelogram is 90°
then all the angles are 90°

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Answer 2

all the angle will be 90 degree

please refer to the figure given.
let angle A is equal to 90 degree (given)

we know that opposite angles of a parallelogram are equal
so angle C will also be equal to 90 degrees

as adjecent angles of a parallelogram are supplementary, angle D will be equal to 90 as well
and opposite angles of a parallelogram are equal to Angle B will also be
hence all the angle will be 90 degree

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