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Maths CBSE Live product
Class 7
A Tale of Three Intersecting lines
Triangle Tales Revisited!
4.
Calculate the value of the exterior angle
Question:
2
m.
In the triangle
\(ABC\)
the vertex
\(C\)
is extended outside to
\(D\)
. If
\(∠A = 27°\)
and
\(∠B =50°\)
,
then
Determine the exterior angle
\(C\)
.
Answer:
Exterior \(\angle C\) \(=\)
∠B + ∠C
∠A + ∠B
∠A + ∠C
[
By the
exterior angle property
angle sum property
.
]
The value of the exterior \(\angle C\)
is
50
54
77
\(°\).
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