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If in a quadrilateral it is given that
MATHEMATICS · Subjective · CBSE · Mathematics · Circles · Circles
Problem
If in a quadrilateral
P
Q
R
S
PQRS
P
QR
S
it is given that
∠
P
Q
S
=
∠
P
R
S
\angle PQS = \angle PRS
∠
P
QS
=
∠
P
R
S
, explain briefly why
P
Q
R
S
PQRS
P
QR
S
must be a cyclic quadrilateral.
Related theory
Circles
Circle angle properties
Angle subtended by a chord
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