Question 181782: Find the area of the triangle with vertices:
A (-7,-3)
B (-7,6) , and
C (3,-1)
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Find the area of the triangle with vertices:
A (-7,-3)
B (-7,6) , and
C (3,-1)
:
Plot these three coordinates A B C on the graph paper. Also plot point P at -7,-1
:
Looking at this you can see two right triangles, PBC and PAC
It's easy to see height of these triangles = 10, from x = -7 to x = +3
The base of PBC = 5
The base of PAC = 2
:
Find the area of the larger triangle, subtract the area of the smaller triangle
that will equal the area of triangle ABC
:
 *5*10 = 25
*2*10 = 10
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triangle ABC area = 15
:
:
Did this make sense to you? Let me know.
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