1.
The total distance around the outside of a shape.
2.
The standard units used to measure length, including millimeters (mm), centimeters (cm), meters (m), and kilometers (km).
3.
Changing a measurement from one unit to another, for example, changing meters to centimeters.
4.
A round shape with all points equidistant from the center.
5.
The distance around the outside of a circle.
6.
The distance from the center of a circle to any point on its edge.
7.
The distance across a circle, passing through the center. It is twice the radius.
8.
A slice of a circle, formed between two radii.
9.
The distance you would travel if you went around the circumference of a sector.
10.
The formula to find the circumference of a circle, given by C=2πr or C=πd, where C is the circumference, r is the radius, and d is the diameter.
11.
The amount of space inside a shape, measured in square units.
12.
A unit used to measure area, such as square centimetres (cm2) or square meters (m2).
13.
Changing the units used to measure area, for example, converting square meters to square centimeters.
14.
A shape made up of two or more basic shapes.
15.
A shape with all sides and angles equal, such as a square or an equilateral triangle.
16.
Finding the total distance around a composite shape by adding or subtracting the perimeters of the individual shapes that make it up.
17.
Finding the total area of a composite shape by adding or subtracting the areas of the individual shapes that make it up.
