Similarity is used with 3-D shapes to solve problems. When we enlarge a shape by a scale factor, the length of each edge and the perimeter are multiplied by the scale factor. When we enlarge a ...

Mathematicians’ Favorite Shapes Hold the Key to Big Mathematical Mysteries ...

Bearings are three figure angles measured clockwise from North. 2-dimensional shapes - Edexcel 2-dimensional shapes are flat. The perimeter of a 2D shape is the total distance around the outside ...