Posted by mota on Friday, November 9, 2007 at 2:45pm.
i have a question in math
(( distance between two points ))
the vertices of a right triangle are S(2,2), T(10,2), and R(4,5). find the area of the triangle.
please in detales .. thank u

math  Reiny, Friday, November 9, 2007 at 5:13pm
first of all, your triangle is not rightangled.
The slopes are 7/6, 7/6 and zero
None of these are negative reciprocals of each other, a condition for a right angle.
But the area is easy to find
Clearly the base ST = 12 units and the height from R to ST is 7
So the area = 1/2 x 12 x 7
= 42 units^2

math  mota, Saturday, November 10, 2007 at 2:21am
thank u

math  mota, Saturday, November 10, 2007 at 2:49am
can u explain how u get the height ?
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