Question

if one angle of a parallelogram is 40° find the measure of the other angles.

please tell it fast urgent​

Answer 1

Answer:

The three angles you are  40° ,  140°  and  140°

Step-by-step explanation:

∠A = 40°

By geometric properties, opposite angles are equal in a parallelogram. So, the angle opposite to 40° is also 40°.

We know in a parallelogram adjacent angles are supplementary

∴ ∠A + ∠B = 180°

 ∠B = 180° - 40°

 ∠B =  140°

By geometric properties, opposite angles are equal in a parallelogram and adjacent angles are supplementary. So, the angle opposite to 140° is also 140°.

So the three angles are  40° ,  140° and  140° .

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