Area of a triangle
Area of a triangle - It's all about rectangles
Area of a triangle `=1/2timesbasetimesheight`
The area of a triangle is half of a rectangle.
So all you need to remember for the area of a triangle is the base times the height (as if it were a rectangle) then half it.
This works for any type of triangle
To remember the area of a triangle, imagine a rectangle around it.
In the diagram above, if you cut out the three triangles, the two outside triangles will fit exactly into the middle triangle.
Area of a triangle - Always imagine a rectangle around it