Posted by **Knights** on Friday, February 22, 2013 at 5:21pm.

What is the area, in square units, of a triangle whose vertices are at (4,-1), (10,3) and (4,5) ?

How to do this?

- Please help on geometry - analytic geometry -
**JJ**, Friday, February 22, 2013 at 5:23pm
It helps if you plot the points first, then you can find the length of the sides of the triangle.

area of a triangle is

1/2 base times height.

- Please help on geometry - analytic geometry -
**bobpursley**, Friday, February 22, 2013 at 5:24pm
http://www.algebra.com/algebra/homework/Triangles/Triangles.faq.question.461705.html

- Please help on geometry - analytic geometry -
**Knights**, Friday, February 22, 2013 at 5:25pm
ok thanks

- Please help on geometry - analytic geometry -
**Knights**, Friday, February 22, 2013 at 5:26pm
I could also i think find the area of the square/rectangle and minus the pieces that are not part of the triangle

- Please help on geometry - analytic geometry -
**bobpursley**, Friday, February 22, 2013 at 5:28pm
Knights, If you are in analytic geometry, I am pretty certain your teacher expects an analytical approach, not a graphical approach. See the example I posted.

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