How many square units are in the area of the parallelogram with vertices at (0, 0), (6, 0), (2, 8) and (8, 8)?

Let's draw a graph.

SO we have a parellogram with base 6, height 8.

How do we calculate the area of a paralellogram? base * height. Why? If you cut off a triangle from the side and move it to the other side it forms a rectangle, but witht the same altitude and base.

6*8 = 48.

If you don't understand anything feel free to ask!