| A | B |
|---|
| line segment | part of a line;with with clear starting and stopping points |
| right angle | an angle that is EXACTLY 90 degrees |
| acute triangle | aa triangle with one acute angle |
| parallel lines | 2 or more lines, on the same plane, that will never meet |
| perpendicular lines | 2 lines that meet or cross to form a 90 degree angle |
| parallelogram | a quadrilateral with 2 sets of parallel lines |
| rhombus | an equilateral quadrilateral |
| nonagon | a 9-sided polygon |
| decagon | an 10-sided polygon |
| angle bisector | a ray that cuts an angle in half |
| collinear points | points that lie on the same line |
| convex polygon | a polygon with all diagonals on the inside |
| equiangular | all angles congruent |
| midpoint | a point that divides a segment in half |
| rhombus | an equilateral quadrilateral |
| supplementary | 2 angles whose sum is 180 degrees |
