Question

find the area of a triangle whose vertices are (2,-2)(-2,1)(5,2)
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Answer 1

This may help you........

Answer 2

Answer:

Here it is.......................

• 1/2(x1(y2-y3) +x2(y3-y1) +x3(y1-y2)
• 1/2(2(1-2) +(-2) (4) +5(-3)
• 1/2(-2-8-15)
• 1/2(-25) = -25/2