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Byju's Answer
Standard VII
Mathematics
Angle Sum Property
If the circum...
Question
If the circumcircle of an isosceles triangle
A
B
C
is equal to
A
B
=
A
C
,
then the angle
A
is
A
π
6
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B
π
3
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C
π
2
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D
2
π
3
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Solution
The correct option is
D
2
π
3
I
n
Δ
P
Q
R
P
C
=
C
R
=
C
Q
=
R
P
C
=
P
R
P
C
=
P
R
=
C
R
Δ
P
C
R
i
s
a
n
e
q
u
i
l
a
t
e
r
a
l
Δ
∠
C
P
R
=
60
∘
Δ
P
C
Q
i
s
a
n
e
q
u
i
l
a
t
e
r
a
l
Δ
∠
C
P
Q
=
60
∘
∠
P
=
∠
C
P
Q
+
∠
C
P
R
=
120
∘
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0
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