Question

(28) In parallelogram ABCD, If angleA = 100° then angelB =
A. 100°
B. 50°

C. 80°

D. 40°​

Answer 1

Answer:

80°

Step-by-step explanation:

as we know that the parallelogram has two parallel lines so the lines where Anlge A and Angle B will be formed so the sum is 180° according to the theorum . so If angle A is 100°

therefore angle B is 80°

Answer 2

Answer:

in //gram,

• adjacent angles are supplementary
• angle A+ angle B=180
• 100+angle B=180
• angle B=180-100
• angle B=80