W hen most people think of shapes, they imagine a triangle, a rectangle, or maybe even a fancier- sounding rhombus or ...

and triangles are the most common shapes used to build big structures. What happens when you push the side of a rectangle? The rectangle is a wobbly, unstable shape. When you push the side ...

9 × 2۰5 = 22۰5 The area of the rectangle is 22۰5 m². To find the area of a compound shape using addition: Split the compound shape into rectangles that make the shape. For each separate ...