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

For example, he knew the ratio between one line and another in certain triangles and with this knowledge was able to figure out the length of the perimeter of a hexagon. Second, we use decimal ...

Draw a rectangle.Now, measure the perimeter. It’s the total ... there are other neat things you can work out. For example, the area of a right angled triangle. Here’s one.