| A | B |
|---|
| polygon | closed plane figure, made up of straight lines |
| regular polygon | closed plane figure, all the lines are the same length |
| quadrilateral | 4 sided figure |
| triangle | polygon with three sides |
| hexagon | polygon with six sides |
| pentagon | polygon with five sides |
| side | line segments that make up a polygon |
| octogon | polygon with eight sides |
| attribute | characteristics of a shape; makes them different from each other |
| vertex | the point where two line segments meet; corners |
| isosceles triangle | two sides are the same length |
| equilateral triangle | all the sides and angles are equal |
| right triangle | one angle is 90 degrees (right angle) |
| scalene triangle | no sides are equal |
| obtuse triangle | has 2 acute angles and 2 obtuse |
| acute triangle | has 3 acute angles |
| trapezoid | quadrilateral with one pair of parallel lines |
| parallelogram | quadrilateral with opposite sides being parallel to each other |
| rectangle | opposite sides are equal and parallel |
| parallel sides | opposite sides are equal distance and will never touch if the line segment continues |
| square | a type of rectangle with all equal sides |
| rhombus | a parallelogram with all sides the same length but not all the angles are the same |
