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Byju's Answer
Standard IX
Mathematics
Quadrilaterals
In parallelog...
Question
In parallelogram PQRS, find
x
,
y
,
z
and
w
.
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Solution
P
Q
R
S
is a parallelogram
We know that, sum of adjacent angles of parallelogram is
180
o
.
∴
∠
Q
P
S
+
∠
P
S
R
=
180
o
⇒
x
+
110
o
=
180
o
⇒
x
=
70
o
We know that, opposite angles of a parallelogram are equal.
∴
x
=
y
=
70
o
and
z
=
110
o
⇒
∠
P
S
R
+
∠
P
S
T
=
180
o
[ Linear pair ]
⇒
110
o
+
w
=
180
o
⇒
w
=
70
o
We get,
x
=
70
o
,
y
=
70
o
,
z
=
110
o
and
w
=
70
o
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