To calculate the area of a composite shape you must divide the shape into rectangles, triangles or other shapes you can find the area of and then add the areas back together. You may have to calculate ...

The perimeter is the total distance around the edge of a 2D shape. Examples of metric units of distance are millimetres (mm), centimetres (cm) and metres (m). The perimeter of any 2D shape can be ...

Whitehall TAG students used graph paper and crayons to find the area and perimeter of polygons that were NOT rectangles or squares. School did not provide students names. The Whitehall third grade TAG ...