| A | B |
|---|
| parallel lines | lines that will never touch |
| perpendicular lines | lines that cross, make a right angle (90), and make an "L" |
| intersecting lines | lines that cross |
| isoceles triangle | a triangle with 2 sides the same length, sounds like "eyes" and you have two eyes |
| equilateral triangle | triangle with all 3 sides the same |
| quadrilateral | 4 sides |
| parallelogram | a slanted rectangle |
| rectangle | a quadrilateral with 2 pairs of parallel lines, 4 right angles, and opposite sides the same length |
| square | 4 right angles, and all sides the same length |
| trapezoid | a pyramid with its top cut off |
| pentagon | a polygon with 5 sides |
| hexagon | a polygon with 6 sides |
| heptagon | a polygon with 7 sides |
| octagon | a polygon with 8 sides |
| decagon | a polygon with 10 sides |
| symmetry | when you fold it in half both sides are the same |
| congruent shapes | exactly the same size and shape |
| similar shapes | the same shape but not the same size |
