Question

A parallelogram has one angle that measures 3.8°. What are the measures of the other three angles in the parallelogram?

Answer 1

Let Angle A = 3.8°

Angle A = angle C {as it is a parallelogram}
so, angle C = 3.8°
angle B=angle D [ in a parallelogram opposite angles are equal ]
= 180-3.8 = 176.2
so angle B and D = 176.2°

Answer 2

Adjacent angles in a parallelogram are supplementary.
The other angle would be (180°-3.8°=176.2°)

The opposite angles in a parallelogram are also equal.

Hence, all the four angles are 3.8°, 176.2°, 3.8°, 176.2°.