| A | B |
| straightedge | an object that is used to draw a straight line |
| compass | a technical drawing tool used for drawing circles and arcs |
| geometric construction | a drawing of geometric figures that uses only a compass, straightedge, and pencil |
| protractor | a tool used for measuring angles or sketchiing angles |
| geometry | the study of the relationships, measurement, and properties of points, lines, angles, surface figures, and solids |
| absolute error | one-half the smallest unit used in making the measurement |
| degree | measurement unit used in measuring angles |
| figure notation | marks on a figure that indicate relationships and properties of the figures |
| inductive reasoning | the process of observing data, recognizing patterns, and making generalizations about those patterns |
| conjecture | a generalization or inference based on observations |
| deductive reasoning | a process of showing that certain statements follow logically from agreed-upon assumptions and proven facts (proof) |