Question

ABCD is a quadrilateral in which
AB||DC, AD||BC, find <a
OA. 750
OB. 730
OC. 180°
OD. 1070​

Answer 1

Answer:

180 degree it is. Thank you

Answer 2

Step-by-step explanation:

Step-by-step explanation:

Given:-abcd is a quadrilateral,AB=CD,OA=OD,OB=OC

to prove:-bc ll ad

Proof:-

AB=DC (given)

OA=OB (given)

OB=OC (given)

Triangle OAB≅triangleODC (SSS criterion)

∠ABD=∠BDC (cpct)

∴AB║CD

ABCD is a parallelogram (quadrilateral having a pair of opp sides equal and parallel is a parallelogram)

∴BC║AD (opp sides of a parallelogram)