Question

Q. 10) ਸਮਾਂਤਰ ਚਤਰਭੁਜ ABCD ਵਿੱਚ B, C and
D ਪਤਾ ਕਰੋ।
In parallelogram ABCD, find B, C and D. ​

Answer 1

Answer:

1) Opposite angles in a parallelogram are equal.

2) Adjacent angles in a parallelogram are supplementary (sumis180

0

)

∴∠B=∠D=135

0

(opposite angles)

∠A+∠B=180

0

(adjacent angles)

∠A=180−135

∠A=45

0