| A | B |
|---|
| polygon | simple closed figure formed by segments |
| simple | sides meet only at their endpoints |
| draw a figure that is NOT simple | see board for examples |
| closed | all the sides meet with no gaps |
| regular polygon | all the segments are the same length and all the angle are equal in measure |
| draw a regular triangle | see board for examples |
| convex polygon | every line that contains two of its vertices passes through the interior of the polygon |
| draw a convex quadrilateral | see board for examples |
| concave polygon | there is at least one line containinig two vertices that does not pass through the interior of the polygon |
| draw a concave pentagon | see board for examples |
| draw a figure that is NOT closed | see board for examples |
| draw a figure that is NOT formed by segments | see board for examples |
| quadrilateral | a polygon that has 4 sides |
| parallelogram | a quadrilateral that has two PAIRS of parallel lines |
| draw a parallelogram | see board for examples |
| area of a quadrilateral | Area = base X height |
| area of a triangle | Area = 1/2 base X height |
| draw a triangle with an area of 15 | see board for examples |
| draw a square with an area of 16 | see board for examples |
| draw a parallelogram with an area of 24 | see board for examples |
