Question

if one angle of a parallelogram be a right angle all its angles are right angle

Answer 1

if one angle of parallelogram is right angle than it is rectangle.
in a rectangle all angles are right angles.
hence proved

Answer 2

Answer:

if one angle of parallelogram is right angle than it is rectangle.

in a rectangle all angles are right angles.

hence proved

Step-by-step explanation:

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