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Find the area of triangle whose …

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Find the area of triangle whose vertices are : (1). (2,3), (-1,0), (2,-4)

Posted by Uday Kumar 4 years, 8 months ago

Yogita Ingle 4 years, 8 months ago

Let A(2,3), B(−1,0) and C(2,−4) are the vertices of △ABC

Area of triangle= 1/2 [x1(y2−y3)+x2(y3−y1)+x3(y1−y2)]

Here (x1,y1)=(2,3)

(x2,y2)=(−1,0)

(x3,y3)=(2,−4)

= 1/2 [2(0+4)−1(−4−3)+2(3−0)]

= 1/2 [8+7+6]

= 21/2 sq.unit

ANSWER

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