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Byju's Answer
Standard VIII
Mathematics
Angles of a Parallelogram
In the figure...
Question
In the figure both RISK and CLUE are parallelograms. Find the value of x in degrees.
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Solution
I
n
t
h
e
p
a
r
a
l
l
e
l
o
g
r
a
m
R
I
S
K
,
w
e
h
a
v
e
∠
R
l
S
=
∠
R
K
S
=
120
[
o
p
p
.
a
n
g
l
e
s
o
f
p
a
r
a
l
l
e
l
o
g
r
a
m
a
r
e
e
q
u
a
l
)
A
l
s
o
,
∠
O
I
C
=
180
∠
R
l
S
[
L
i
n
e
a
r
p
a
i
r
o
f
a
n
g
l
e
s
)
⟹
O
I
C
=
180
120
=
60......
(
1
)
I
n
t
h
e
p
a
r
a
l
l
e
l
o
g
r
a
m
C
L
U
E
,
C
E
∥
L
U
a
n
d
a
t
r
a
n
s
v
e
r
s
a
l
C
L
i
n
t
e
r
s
e
c
t
s
t
h
e
m
.
∠
I
C
O
=
∠
C
L
U
[
C
o
r
r
e
s
p
o
n
d
i
n
g
a
n
g
l
e
s
a
r
e
e
q
u
a
l
)
⟹
∠
I
C
O
=
70......
(
2
)
I
n
O
I
C
,
b
y
a
n
g
l
e
s
u
m
p
r
o
p
e
r
t
y
,
w
e
h
a
v
e
∠
I
O
C
+
∠
O
I
C
+
∠
I
C
O
=
180
[
F
r
o
m
(
1
)
a
n
d
(
2
)
]
⟹
∠
I
C
O
+
60
+
70
=
180
⟹
∠
I
O
C
=
180
60
70
=
50.
∴
x
=
∠
I
O
C
=
50
o
[
V
e
r
t
i
c
a
l
l
y
o
p
p
o
s
i
t
e
a
n
g
l
e
s
a
r
e
e
q
u
a
l
)
Suggest Corrections
2
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