Question

ABCD is a cyclic trapezium with AD || BC. If angle B=70, determine other three angles
of the trapezium.​

Answer 1

Answer:

GIVEN ABCD IS CYCLIC

where AD ll BC

and angle B =70°

TO FIND

ANGLE A,C&D

angle A = 180-B (co-interior)

A= 180°-70°= 110°

angle C = 180°-A ( opposite angles of a cyclic quadrilateral are supplementary ).

C = 180° - 110°

= 70°

angle D = 180°-B ( opposite angles of a cyclic quadrilateral are supplementary ).

D= 180° -70°

= 110°

Therefore A = 110°

C = 70°

D = 110°

Hope it helps you :-)

plz mark as brainliest