Area: Area is the amount of space inside a two-dimensional shape, usually measured in square units. Rectangle: A rectangle is a simple four-sided shape with two pairs of parallel sides.

Numberblock Seventeen is hosting a big area art challenge. Numberblocks One, Three and Four need to cover a canvas with ...

The area of a compound shape may be calculated either by adding rectangles that create the shape or by subtracting a cut-out rectangle from a larger rectangle. Sometimes there is more than one way ...