| A | B |
|---|
| Diameter | The measure of a line that runs from a side, through the middle and to the other side of a circle. |
| Radius | Half the diameter |
| Circumference divided by the diamter | always = Pi |
| Pi | 3.14 |
| Circumference | The distance around a circle |
| Area of a circle | 3.14 x r x r |
| area of a rectangle | L x W |
| Area of a triangle | B x H/ 2 |
| Area of a parallelogram | b x h |
| Area of a trapezoid | (sb + lb)x h /2 |
| True or false: a square is a rectangle | TRUE |
| The width of a rectangle is what part of a circlec | The radius |
| The length of a rectangle is what part of a circle | Half the circumference |
| What are the counting units for area | Units Squared |
| Area | The number of squared units it takes to cover a figure |
| Perimeter | Add up the sides |
