| A | B |
|---|
| Adjacent angles | Angles that share a common side. |
| Supplementary angles | Two Angles whose sum = 180 |
| Midpoint of a segment | The point that divides the segment into 2 congrunen segments |
| Bisector | A line, ray or segment that divides an angle or segment into two congruent angles |
| Complementary | Two angles whose sum = 90 degrees |
| Linear pair | Two angles which form a straight angle |
| Vertical Angles | Opposite angles |
| Supplementary angles | Two angles that form a straight angle |
| Acute angle | an angle that is >0 and <90 degrees |
| Right angle | An angle that measure 90 degrees |
| Obtuse angle | angle >90 and <180 |
| Straight angle | Angle = 180 degrees |
| Line segment | A line with two definite endpoints |
| Trisect | To divide an angle or segment into three congruent parts |
| Perpendicular | Two lines that form a right angle |
| Parallel | Two lines whose slopes are equal |
| Alternate interior angles | Two angles that form a z and are congruent if the lines are parallel. |
| Corresponding angles | Two angles that are the same position in relation to the transversal and the parallel line. They are congruent if the lines are parallel. |
| Slope | Rise / Run or change in y over change in x |
| Distance formula | Subtract the x's, square them, subtract the y's, square them add the two sums and take the square root. |
