Plot the points A(2, 5), B(-2, 3) and C(5, 4) on the graph paper and find the area of ΔABC.
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Plot the points A(2, 5), B(-2, 3) and C(5, 4) on the graph paper and find the area of ΔABC.
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Answer:
Construct a line AM which is perpendicular to BC.
Area of ΔABC=
2
1
×b×h=
2
1
×BC×AM.
So on further calculation we get
Area of ΔABC=
2
1
×6×3
Area of ΔABC=9 sq. units
solution