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Byju's Answer
Standard VII
Mathematics
Angle Sum Property
In a quadrila...
Question
In a quadrilateral
A
B
C
D
,
∠
A
=
60
o
,
∠
B
=
105
o
and
∠
D
=
50
o
. Find
∠
C
.
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Solution
In a quadrilateral
A
B
C
D
,
∠
A
=
60
o
,
∠
B
=
105
o
and
∠
D
=
50
o
.
We know, by angle sum property, in a quadrilateral sum of four angles is
360
o
.
∴
∠
A
+
∠
B
+
∠
C
+
∠
D
=
360
o
⇒
60
o
+
105
o
+
∠
C
+
50
o
=
360
o
⇒
215
o
+
∠
C
=
360
o
⇒
∠
C
=
145
o
.
Hence,
145
o
is the answer.
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Similar questions
Q.
In quadrilateral ABCD
∠
B
=
90
o
,
∠
C
−
∠
D
=
60
o
and
∠
A
−
∠
C
−
∠
D
=
10
o
. Find
∠
A,
∠
C and
∠
D.
Q.
If in a quadrilateral ABCD,
∠
A
=
120
o
,
∠
B
=
60
o
,
∠
C
=
100
o
then
∠
D
=
...............
Q.
Three angles of a quadrilateral
A
B
C
D
are
∠
A
=
70
o
,
∠
B
=
50
o
and
∠
C
=
82
o
. Find
∠
D
.
Q.
A
B
C
D
is a cyclic quadrilateral such that
A
=
90
o
,
B
=
70
o
,
C
=
95
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and
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=
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.
The statement is:
Q.
In a triangle ABC, it is given that
∠
B
=
105
o
and
∠
C
=
50
o
. Find
∠
A
.
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