| A | B |
|---|
| Perpendicular | Two lines segments or rays that form right angles when they intersect. |
| Complements | Two angles whose measures add up to 90 deg. |
| Linear Pairs | Two adjacent angles that form a straight angle from their non shared ray. |
| Verticle Angles | Non adjacnet, non overlapping, angles formed by two intersecting lines. |
| Supplements | Angles whose measure add up to 180 deg. |
| Linear pair property | The angles that form a linear pair are supplementary. |
| Verticle Angle Property | Vertical andgles are congruent. |
| Angles formed by perpendicular lines? | If two lines are perpendicular then they form congruent adjacent angles. If two lines form congruent angles then the lines are perpendicular. |
| Has no congruent sides | Scalene Triangle |
| Has a least two congruent sides. | Isosceles Triangle |
| Has three congruent sides. | Equilateral Triangle |
| Has three congruent angles. | Equiangular Triangle |
| Acute Triangle | Has three acute angles. |
| Right Triangle | Has a right angle. |
| Obtuse Triangle | Has an obtuse angle. |
| Angles of a Triangle | The sum of the angle measures of an triangle is 180 deg. |
| Exterior Angles | The sum of all exterior angles is 360 deg. |
| Angles of a Polygon | The sum of the angles of a polygon with n sides is (n-2)180 |
