| A | B |
|---|
| point | location in space |
| line | continues in both directions without stopping; has no beginning or end point |
| line segment | part of a line that has start and end points |
| ray | has one point and continues forever in the opposite direction |
| angle | two rays that have a point where they meet |
| perpendicular | two lines that meet at ninety degree angles |
| parallel | two lines that never meet |
| intersecting | two lines that meet and form V's |
| obtuse angle | an angle that measures more than ninety degrees |
| acute angle | an angle that measures less than ninety degrees |
| straight angle | an angle that measures one hundred eighty degrees |
| right angle | an angle that measures exactly ninety degrees |
| parallelogram | a four-sided shape whose opposite sides are parallel |
| square | a four-sided shapes whose sides are all equal |
| rectangle | a four-sided shape whose opposite sides are parallel and equal. |
| rhombus | a four-sided shape whose sides are all equal and opposite sides are parallel |
| triangle | a three-sided shape |
| trapezoid | a four-sided shape who has one pair of parallel sides |
