| A | B |
|---|
| supplementary | two angles which together make 180 degrees |
| complementary | two angles which together make 90 degrees |
| m<17 | letter variable 'm' is less than 17 |
| m<Y ( Y= 93 degrees) | letter variable 'm' is less than 93 degrees |
| penta- | five sides |
| six sides | hexa- |
| seven sides | hepta- |
| eight sides | octa- |
| nine sides | nona- |
| deca- | ten sides |
| quadrilateral | a plane figure with four sides |
| at least two sides are the same length | Isosceles |
| Equilateral | all sides are the same length |
| Scalene | no sides are the same length |
| corresponding sides | sides in matching positions |
| space between two lines that meet at the same point | angle |
| vertex | point where rays meet |
| degrees | unit of measurement for angles- - indicated by a small circle after the number |
| right angle | two rays forming 90 degrees |
| straight | two rays forming 180 degrees |
| acute angle | angle less than 90 degrees |
| obtuse angle | angle more than 90 degrees but less than 180 degrees |
| parallel lines | lines that will go on forever but will never touch |
| perpendicular lines | two lines meeting at a 90 degree angle |
| congruent | exactly the same |
| similar | same shape but different sizes |
