Question

. ABCD is a quadrilateral in which AB||CD and AD BC. Find Zb, Zc and ZD
D
d
50°
b
B
A​

Answer 1

Answer:

angle is infinity , so I can not solve this question

Answer 2

Answer:

Since, AB||CD and AD||BC, hence quadrilateral ABCD is a parallelogram.

angA= angC (opposite angles of a ||gm r equal)

50°=angC

Now, AB||DC and AD is a transversal,

angA+angD=180° (co-interior angles)

50°+angD=180°

angD=130°

Also, angD=angB

So measure of angB is 130°(opp angles of a ||gm r equal).

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