How to solve Area of Tirangles? (GEOMETRY)

Hey kids,

We are moving beyond calculating area and perimeter of squares, rectangles, parallellograms, and right triangles. Our next task is to to try solve acute and obtuse triuangles as well.

  Take a look at the following videos and lets see what we can do!

If I want to solve the area of this Right triangle, I can solve the rectangle first and then divide it equally in 2 parts.

Here was are looking at another type of triangle.
Take a look at the videos to realize why this formula works.
 If you are still in doubt, lets cut out some shapes until we can visualize this ourselves.