| A | B |
|---|
| pentagon | A polygon with five sides and five angles |
| parallelogram | A quadrilateral whose opposite sides are parallel |
| intersecting lines | Lines that cross each other at exactly one point. |
| fact family | A set of related multiplication,division or addition or subtraction using the same numbers. |
| double-bar graph | A graph used to compare similar kinds of data. |
| congruent | Having the same size and same shape |
| composite number | A number having more than two factors |
| acute angle | An angle that is less than 90 degrees |
| variable | A letter or symbol that stands for any number. |
| line-graph | A graph used to show changes over time. |
