area-of-a-triangle-on-a-coordinate-plane

# Interactive video lesson plan for: Area of a Triangle on a coordinate plane

#### Activity overview:

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How do you find the area of a triangle when you don't have a right angle or an altitude?. You can use the coordinates in order to find the area of the triangle
Video Guide
:20 Sample problem one Find the area of a triangle that is drawn on a coordinate plane
The triangle does not have a right angle or an altitude drawn
:39 Step one Identify the vertices and write down the coordinates
1:09 Use the formula Area = Ax(By-Cy) + Bx(Cy-Ay)+(Ay-By)/2
in order find the area of the triangle
2:00 Plug the coordinates into the area formula
3:17 Simplify the formula after plugging in numbers
4:16 Answer to the sample problem involving finding the area of a triangle on a coordinate plane

For other methods of finding the area of a triangle see
http://www.moomoomath.com/Finding-the-area-of-a-triangle.html

You may also enjoy…..
Area Triangle Coordinate Plane
https://www.youtube.com/watch?v=JY_kxkXWc48
Area of an Equilateral Triangle
https://www.youtube.com/watch?v=SYSIaLXKzKk
Area using SAS method
https://www.youtube.com/watch?v=usCptozPkWU
Finding altitude of a triangle
https://www.youtube.com/watch?v=d4YILnTV07E
Area of Triangle
https://www.youtube.com/watch?v=Dt5fi89gA-0
Triangle Area
https://www.youtube.com/watch?v=xz6gBA0M9FY

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Tagged under: moomoomath,Plane,area triangle 3 points,area triangle coordinate plane,area triangle coordinates,geometry lesson,geometry ,geometry,Triangle (Mathematical Concept),Cartesian Coordinate System (Invention),area triangle points,math ,geometric shapes,Area (Dimension), area triangle,finding area triangle

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