| A | B |
|---|
| denominator | the bottom number of a fraction 3/4 |
| numerator | the top number of a fraction |
| line | continues in both directions |
| line segment | part of a line; has endpoints |
| ray | has one endpoint and continues in one direction |
| parallel lines | lines and segments that go in the same directions and stay the same distance apart |
| perpendicular | lines that intersect and have square corners |
| right angle | an angle that forms a square corner and measure 90 degrees |
| obtuse angle | angle that is more than 90 and less than 180 |
| acute angle | angle that is more than 0 and less than 90 |
| elapsed time | the difference between the starting time and the ending time |
| factor | the numbers being multiplied in a multiplication problem |
| product | the answer to a multiplication problem |
| communitive property of multiplication | property in multiplication where you may change the order of the factors and it will not change the product |
| identity property of multiplication | the product of any number and 1 is equal to the first number |
| property of zero for multiplication | zero times any number is zero |
| area | the number of square units needed to cover a surface |
| array | a rectanbular arrangement of number or symbols in columns or rows |
| square number | the product when a whol number is multiplied by itself: 3x3=9 |
| square root | one of two equal actors of a number. |
| symmetry | reflection of figure in size and shape on either side of a dividing line |
| exponent | the upper number in an exponential expression that shows how many times the base is to be used as a factor |
| vertex | a point of a angle, polygon, or polyhedron where two or more lines, rays or segments meet |
| degree | a unit for measuring angles and degrees. |
