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Byju's Answer
Standard VII
Mathematics
Angle Sum Property
Find the angl...
Question
Find the angle measure x in the following figures: [ 4 marks]
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Solution
Using angle sum property of a quadrilateral,
50
∘
+
130
∘
+
120
∘
+
x
=
360
∘
⇒
300
∘
+
x
=
360
∘
⇒
x
=
360
−
300
⇒
x
=
60
∘
[2 marks]
(b) Using angle sum property of a quadrilateral,
90
∘
+
60
∘
+
70
∘
+
x
=
360
∘
⇒
220
∘
+
x
=
360
∘
⇒
x
=
360
∘
−
220
∘
⇒
x
=
140
∘
[2 marks]
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