Posted by Knights on .
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,
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,
http://www.algebra.com/algebra/homework/Triangles/Triangles.faq.question.461705.html

Please help on geometry  analytic geometry 
Knights,
ok thanks

Please help on geometry  analytic geometry 
Knights,
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,
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.