| A | B |
|---|
| line graph | graph data using line segments |
| 7.7 and 7.78 | a decimal number |
| estimate | a nearly correct answer |
| operation | any mathematical process |
| line segment | part of a line with beginning and ending |
| line | a straight line that is endless in length |
| parallel lines | two lines in the same plane that never meet |
| point | a location in space, no length or width |
| rotation | turn |
| ray | has beginning point but not end end |
| symmetry | line drawn through the center of a figure such that the two halves are congruent |
| vertex | point from which two rays begin |
| acute angle | angle less than 90 degrees |
| tree diagram | diagram with all possible outcomes |
| fraction | part of a whole |
