parallel lines and polygons
Order by
27 terms
Terms | Definitions |
|---|---|
 Transversal | a line that intersects two coplanar lines at two distinct points |
| Alternate Interior Angles | are always congruent |
| Same-Side Interior Angles | are always supplementary |
| Corresponding Angles | are always congruent |
| Sum of Interior Angles in a Triangle | 180° |
| Equiangular Triangle | all angles are congruent |
| Acute Triangle | all angles are acute |
| Right Triangle | contains one right angle |
| Obtuse Triangle | contains one obtuse angle |
| Equilateral Triangle | all sides are congruent |
| Isosceles Triangle | at least two sides are congruent |
| Scalene Triangle | no sides are congruent |
| Convex Polygon | contains no diagonal with points outside the polygon |
| Concave Polygon | contains at least one diagonal with points outside the polygon |
| Triangle | 3 sides |
| Quadrilateral | 4 sides |
| Pentagon | 5 sides |
| Hexagon | 6 sides |
| Octagon | 8 sides |
| Nonagon | 9 sides |
| Decagon | 10 sides |
| Dodecagon | 12 sides |
| Equilateral Polygon | all sides are congruent |
| Equiangular Poylgon | all angles are congruent |
| Regular Polygon | all sides and all angles are congruent |
| Polygon Angle-Sum Theorem | (n - 2)180 |
| Polygon | a closed plane figure with at least three sides that are segments which only connect at the endpoints |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.