| A | B |
|---|
| precision | level of detail an instrument can measure |
| accuracy | relative exactness of a measurement |
| significant digits | digits that are known with certainty |
| 3.28 | 3 significant digits |
| 1.5 | 2 significant digits |
| perimeter | the distance around a geometric figure |
| square a number | multiply the number by itself |
| circumference | measure around a circle |
| area | number of unit squares needed to cover the figure |
| A = lw | formula for Area of a rectangle |
| A = bh | formula for Area of a parallelogram |
| A = 1/2 bh | formula for Area of a triangle |
| A = 1/2h(b1 + b2) | formula for Area of a trapezoid |
| A = Pi mulitplied by radius squared | formula for Area of a circle |
