Question

In a parallelogram ABCD angle D is 135° determine the measure of angle A and angle B​

Answer 1

Answer:

1) Opposite angles in a parallelogram are equal.

2) Adjacent angles in a parallelogram are supplementary (sumis180°).

∴∠B=∠D=135°

(opposite angles)

∠A+∠B=180°

(adjacent angles)

∠A=180−135

∠A=45°