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Byju's Answer
Standard IX
Mathematics
Each Angle of a Rectangle Is a Right Angle
Find x, y and...
Question
Find x, y and z in the given parallelogram.
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Solution
A
B
C
D
is a given parallelogram, where
A
B
∥
C
D
and
A
D
∥
B
C
⇒
∠
A
+
∠
B
=
180
o
[ In parallelogram sum of adjacent angles is supplementary ]
⇒
75
o
+
x
=
180
o
⇒
x
=
105
o
⇒
∠
B
=
∠
D
=
105
o
$ [ In parallelogram opposite angles are equal ]
⇒
∠
A
=
∠
C
=
75
o
[ In parallelogram opposite angles are equal ]
∴
y
=
75
o
⇒
∠
A
D
C
+
∠
E
D
C
=
180
o
[ Linear pair ]
⇒
105
o
+
z
=
180
o
⇒
z
=
75
o
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