Posted by mary on .
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,
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