Will mark BRAINLIEST!!!

Britton rotated trapezoid ABCD 180° on the coordinate plane. If angle B is 20° and angle D is 90°, what is the degree measurement of angle B′?

20°
70°
90°
180°

Respuesta :

Answer:

i believe its A. if i'm wrong then don't mark me as brainlists :(

Step-by-step explanation:

Answer:

a

Step-by-step explanation: