Please help on geometry  analytic geometry
posted by Knights .
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?

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. 
http://www.algebra.com/algebra/homework/Triangles/Triangles.faq.question.461705.html

ok thanks

I could also i think find the area of the square/rectangle and minus the pieces that are not part of the triangle

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.
Respond to this Question
Similar Questions

Geometry
Find the area of a triangle whose vertices have coordinates (2,5), (6,1), and (3,4) 
analytic geometry
the base of an isoceles triangle lies on the xaxis. The coordinates of the midpoints of the equal sides pf the triangle are (2,3) and (2,3). What are the coordinates of the vertices of the triangles? 
analytic geometry/graphing problem
The vertices of a triangle are the points of intersection of the line y=x1, x=2 and y = 1/5x + 13/5. Find an equation of the circle passing through all three vertices. I don't understand how to solve this: should I set them all equal … 
Analytic Geometry
A square is a quadrilateral with four equal sides. The area of a square is equal to square of its sides. The diagonal of a square is a line segment joining any two nonconsecutive side. Find the area of a square and the length of its … 
Analytic Geometry
Find angle A of a triangle whose vertices are A (3,3) , B(3,1) and C (1,3) 
Analytic Geometry
A circle at the origin whose is 2 units is 2 is inscribed in a right triangle whose base is 8 units and altitude 6 units. Find a) The equation of the circle b)The area and circumference of the circle c)The area of the right triangle … 
(Please Help!) Analytic Geometry
Find the vertices, foci, eccentricity, and length of the latus rectum of the eclipse whose equation is x^2 + 9y^2 = 9 
Geometry Please help
I think I got forgotten... What is the perimeter of triangle PQR with vertices P(–2, 9), Q(7, –3), and R(–2, –3) in the coordinate plane? 
Math
How many square units are in the area of the triangle whose vertices are the x and y intercepts of the cuure y=(x3)^2(x+2)? 
Geometry
find the area of a triangle whose vertices have coordinates:(5,5)(3,4)(8,3)