| A | B |
|---|
| perimeter | the measurment all the way around the outside of an object |
| area | the inside of a surface-it is measured in square units |
| hexagon | six sided figure |
| pentagon | five sided figure |
| symmetry | when one half of an object mirrors the other |
| faces | flat surface of a 3-dimensional shape |
| vertex or vertices | point where surfaces meet-corner |
| edges | where two surfaces join |
| congruent | same size; same shape |
| polygon | a plane shape having three or more straight sides |
| triangle | a three sided figure |
| octagon | an eight sided figure |
| centimeter | a metric unit used for measuring length. It is equal to 1/100 of a meter. |
| meter | a metric unit for measuring length-equal to 100 cms |
| inches | a standard unit for measuring length-12 of these equals one foot |
| kilometer | metric unit for measuring distance- |
| feet | foot |
| right angle | an angle measuring 90 degrees |
| acute angle | an angle smaller than a right angle |
| obtuse angle | an angle larger than a right angle |
