| Term | Definition |
| geometry | a major branch of mathematics that deals with shapes, sizes & other properties of figures |
| integers | the set of counting numbers, their opposites, and zero ( ...-2, -1, 0, 1, 2 ...) |
| line | a straight collection of points extending in opposite directions without end |
| line segment | a part of a line with two distinct endpoints |
| negative numbers | numbers less than zero |
| commutative property of multiplication | changing the order of factors does not change their product (a x b = b x a) |
| factors | any of the numbers multiplied in a multiplication problem |
| identity property of multiplication | the product of any number and 1 is equal to the original number (a x 1 = a) |
| multiple | a product of a counting number and another number |
| product | the result of multiplication |
| property of zero for multiplication | zero times any number is 0 |
| horizontal | side to side |
| vertical | upright; up and down |
| oblique | slanted or sloping; diagonal |
| ray | a part of a line that begins at a point and continues without end in one direction |
| point | an exact position (on a line or plane) |
| number line | a line for representing and graphing numbers. Each point on the line corresponds to a number |