Calculate the area of the triangle whose vertices are (1, 1), (2.3) and (4.5).
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The area of triangle is given by
ΔABC = 1/2 [ x1 ( y2 - y3) + x2 ( y3 - y1 ) + x3 ( y1 - y2 ) ]
= 1/2 [ 1 ( 3 - 5 ) + 2 ( 5 - 1 ) + 4 ( 1 - 3 ) ]
= 1/2 [ 1 * (-2) + 2 * (4) + 4 * (-2) ]
= 1/2 [ (-2) + 8 + (-8) ]
= 1/2 [ -2 + 8 - 8 ]
= 1/2 [ -2 ]
= 1/2 * -2
= -1
Step-by-step explanation:
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