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| 1. |
FIND The area of Traingle whose veetices are (2,3) (-1,0) (2,-4) |
| Answer» A(2,3) B(-1,0) C(2,-4)X1=2 X2=-1 X3=2Y1=3 Y2=0 Y3= -4Area of triangle = 1/2 {x1(y2-y3) + x2(y3-y1) + x3(y1-y2)}= 1/2 {2(0-(-4)) + (-1) (-4-3) + 2(3-0)}= 1/2 {8-(-7)+6}= 1/2 {8+7+6}= 1/2 × 21= 21/2\xa0 | |