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Byju's Answer
Standard IX
Mathematics
Plotting a Point
Plot the poin...
Question
Plot the points
A
(
2
,
5
)
,
B
(
−
2
,
2
)
and
C
(
4
,
2
)
on a graph paper. Join
A
B
,
B
C
and
A
C
.
Calculate the area of
Δ
A
B
C
.
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Solution
Construct a line
A
M
which is perpendicular to
B
C
.
Area of
Δ
A
B
C
=
1
2
×
b
×
h
=
1
2
×
B
C
×
A
M
.
So on further calculation we get
Area of
Δ
A
B
C
=
1
2
×
6
×
3
Area of
Δ
A
B
C
=
9
sq. units
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Q.
Plot the points A(2, 5), B(–2, 2) and C(4, 2) on a graph paper. Join AB, BC and AC. Calculate the area of ∆ABC.