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Mathematics
Mathematics
Problem
In cyclic quadrilateral PQRS,
∠
P
=
72
∘
\angle P = 72^\circ
∠
P
=
7
2
∘
. Find
∠
R
\angle R
∠
R
. a)
90
∘
90^{\circ}
9
0
∘
b)
108
∘
108^{\circ}
10
8
∘
c)
72
∘
72^{\circ}
7
2
∘
d)
144
∘
144^{\circ}
14
4
∘
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