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Standard VII
Mathematics
Question
In a triangle ABC, if
∠
A
=
55
o
, if
∠
A
=
55
o
and
∠
B
=
40
o
, find
∠
C
.
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Solution
Verified by Toppr
Using theorem, Sum of interior angles of a triangle is
180
o
.
Hence
∠
A
+
∠
B
+
∠
C
=
180
o
⇒
55
o
+
40
o
+
∠
C
=
180
o
⇒
∠
C
=
180
o
−
95
o
⇒
∠
C
=
85
o
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Similar Questions
Q1
In a triangle ABC, if
∠
A
=
55
o
, if
∠
A
=
55
o
and
∠
B
=
40
o
, find
∠
C
.
View Solution
Q2
Construct a triangle
A
B
C
with
∠
B
=
55
o
,
∠
C
=
48
o
and
B
C
=
3.8
c
m
. Construct its circum-circle.
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Q3
In
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B
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,
∠
B
=
45
o
,
∠
C
=
55
o
and bisector of
∠
A
meets BC at a point D. Find the
∠
A
D
B
and
∠
A
D
C
.
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Q4
In Fig.8.2,
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=
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o
, determine
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.
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Q5
AB
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