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Byju's Answer
Standard VII
Mathematics
Angle Sum Property
In a square ...
Question
In a square
P
Q
R
S
, diagonals bisect sach other at
O
. Prove that
Δ
P
O
Q
≅
Δ
Q
O
R
≅
Δ
R
O
S
≅
Δ
S
O
P
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Solution
In
△
P
O
Q
&
△
Q
O
P
P
O
=
O
R
[bisect]
O
Q
=
O
Q
[Common]
∠
P
O
Q
=
∠
R
O
Q
[diagonal bisect each other at
90
o
]
△
P
O
Q
≅
△
Q
O
P
[
S
A
S
]
Similarly
△
P
O
S
≅
△
S
O
R
△
S
O
R
≅
△
Q
O
R
△
Q
O
P
≅
△
P
O
S
from all these
△
P
O
R
≅
△
Q
O
R
≅
△
R
O
S
≅
S
O
P
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