| A | B |
|---|
| Conjecture | an educated guess based on an observed pattern |
| Inductive Reasoning | Making a prediction based upon an observed pattern |
| Deductive Reasoning | Drawing a conclusion based on facts and logic. |
| Plane | a flat surface that continues indefinitely in all directions which is defined by 3 non-collinear points |
| Line | A geometric object that has a minimum of two points and continues indefinitely in two directions |
| Point | A geometric object without dimension. It has a location. |
| Acute Angle | An angle measuring less than 90 degrees. |
| Right Angle | An angle measuring exactly 90 degrees |
| Obtuse Angle | An angle measuring grater than 90 degrees |
| Straight Angle | An angle measuring exactly 180 degrees |
| Complementary Angles | Two or more angles that may or may not be adjacent whose measures add up to 90 degrees |
| Supplementary Angles | Two or more angles which may or may not be adjacent whose measures add up to 180 degrees |
| Linear Pair | Two angles which are adjacent and together form a line. These angles are supplementary. |
| Parallel lines | two lines that never intersect and have the same slope. |
| Perpendicular lines | Two lines that intersect to form four 90 degree angles and whose slopes are a negative reciprocal of one another. |
| Skew lines | Non-coplanar lines that are not parallel and do not intersect. |
