| A | B |
|---|
| perimeter | add all sides; distance around a figure |
| metric system | based on the number ten; way of measuring |
| meter | metric unit of length |
| gram | metric unit of mass |
| liter | metric unit of volume |
| customary system | way of measuring items |
| conversion factor | changing from one unit of measure to another |
| area | amount of surface a figure covers |
| square inch | an inch whose sides each measure one inch |
| square centimeter | a centimeter whose sides each measure one centimeter |
| base of a square or rectangle | distance across the bottom |
| height | distance along a side |
| right angle | 90 degree angle; like the corner of a page |
| length times width | formula for area of a square or rectangle |
| square units | how all area is labeled |
| parallelogram | four sided figure whose opposite sides are parallel |
| base times height | formula for area of a parallelogram |
| half times base times height | formula for area of a triangle |
| pi | rounded to 3.14; Greek letter |
| radius | half the length of a diameter |
