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Byju's Answer
Standard IX
Mathematics
Angle Sum Property of a Quadrilateral
If the sum of...
Question
If the sum of three angles of a quadrilateral is 300°. Find the measure of fourth angle.
A
30°
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B
45°
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C
60°
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D
90°
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Solution
The correct option is
C
60°
We know that by angle sum property,
the sum of internal angles of a
quadrilateral
=
360
∘
Let the unknown angle be
x
.
So,
300
∘
+
x
=
360
∘
x
=
360
∘
−
300
∘
x
=
60
∘
The fourth angle is
60
∘
.
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