Question

11. If one angle of a parallelogram is 90°, then each of its angles measures …
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Answer 1

Answer:

From the theorem if one angle is 90 then all the angles would be 90

Step-by-step explanation:

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Answer 2

Answer:

Total measure of all angles of parallelogram

= 360 °

Measure of one angle = 90°

So, measure of the opposite angle will be 90°.

And the rest two angles have a total of 180°.

So, Measure of rest two angles will be 90°

So, this is not a parallelogram. It is a square.