Question

In parallelogram ABCD,if angle A =100 then angle B =​

Answer 1

Answer:

80°

Step-by-step explanation:

sum of opposite angles of a parallelogram is 180°

Hence, A+C=180

100+C=180

C=80°

Answer 2

•Cᴏʀʀᴇᴄᴛ Qᴜᴇsᴛɪᴏɴ:-

In parallelogram ABCD,if angle A =100 then find angle A + angle C

•Sᴏʟᴜᴛɪᴏɴ:-

∵ ABCD is a parallelogram

∴ ∠A + ∠B = 180°

⇒ ∠A + 180°

⇒ ∠A = 80°

∵ ∠C = ∠A = 80°

∴ ∠A + ∠C = 80° + 80°

= 160°