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Byju's Answer
Standard VI
Mathematics
Sum of Exterior Angles of a Polygon
Find the angl...
Question
Find the angle measure x in the following figure:
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Solution
First base interior angle =
180
∘
−
70
∘
=
110
∘
Second base interior angle =
180
∘
−
60
∘
=
120
∘
There are 5 sides, n = 5
∴
A
n
g
l
e
s
u
m
o
f
a
p
o
l
y
g
o
n
=
(
n
−
2
)
×
180
∘
=
(
5
−
2
)
×
180
∘
=
540
∘
∴
30
∘
+
x
+
110
∘
+
120
∘
+
x
=
540
∘
⇒
260
∘
+
2
x
=
540
∘
⇒
2
x
=
540
∘
−
260
∘
⇒
x
=
140
∘
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Sum of Exterior Angles of a Polygon
Standard VI Mathematics
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