| A | B |
|---|
| acute angle | any angle that measures between 0 and 90 degrees |
| congruent angles | 2 angles that are have the same measurement |
| bisect | to divide into 2 congruent parts |
| congruent sides | 2 sides that are the same |
| decagon | a polygon that has ten sides |
| degree | the most common unit of measurements for an angle |
| dodecagon | a polygon having twelve sides |
| equilaleral triangle | a triangle with three equil sides |
| heptagon | a polygon with seven equil sides |
| hexagon | a polygon with six equil sides |
| isosceles triangle | a triangle that has at least two side congruent |
| nonagon | a polygon with nine sides equil |
| obtuse | a angle that is from90 to 180 degrees |
| octagon | a polygon that has eight equil sides |
| pentagon | a polygon with five sides equil |
| parallelogram | a quadrilateral with that has both pairs of oppisite sides |
| polygon | a simple closed figure in a plan formed by three or more line segments |
| quadrillateral | a polygon having 4 sides |
| rectangle | a parollelagram with all congruent angles |
| rhombus | a polygon with all sides equil |
