Posted by mary on Friday, January 14, 2011 at 3:49pm.
Given triangle XYZ with vertices
X(2,0),Y(6,0), and Z(4,8), find the number of square units in its area.

algebra  Reiny, Friday, January 14, 2011 at 4:04pm
Since two points lie on the xaxis, this becomes an easy question
Consider XY as the base, its length would be 8
Z is 8 units above the xaxis, so the height is 8
Area = (1/2)base x height
= (1/2)(8)(8) = 32
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