| Definiton | | A fundamental statement that is assumed to be true without proof |
| Negation | | 1/60th of a degree |
| Tick Marks | | Two angles with the same measure |
| Hypothisis | | Place where to points meet or cross |
| Bisect | | the part of an if - then statement that follows the word "then". Consequent |
| Vertex | | Angles that measures 180 degrees exactly |
| Line Segment | | A straight set of points that extends off into infinity in both directions |
| Congruent Angles | | Line on which every point represents a real number |
| Line | | A figure formed by two rays with a common endpoint |
| Midpoint | | A point in the middle of two others |
| Triangle | | Useful tool for determining wethere or not a conditional statement is true |
| Intersection | | Point of an angle where two rays interset |
| Protractor | | To divide a segment or an angle into two congruent parts |
| Postulate | | Not lying on the same line |
| Number Line | | A Set of two points one end going off into infinety |
| Ray | | Angle that measures 90 degrees exactly |
| Congruent Segments | | Angle that is longer than 90 degrees |
| Conclusion | | Three sided polygon |
| Acute Angle | | A proposition that is being investigated, it has yet to be proven |
| Noncollinear | | Unit of measure for angles |
| Therom | | Two points on a line, and all the points between those two points |
| Angle | | States the meaning of a term or idea |
| Venn Diagram | | If the statment is "P" then the negation is "not P" |
| Straight Angle | | A mathmatical statement that has been proven |
| Right Angle | | Angle with measure less than 90 degrees |
| Degree | | Used to indicate congruent angles and segments |
| Collinear | | To divide a angle into three congruent parts |
| Minute | | Lying on the same line |
| Trisect | | Device for measuring angles |
| Obtuse Angle | | Two segments with the same length |