| A | B |
|---|
| acute angle | angle less than 90 degrees |
| obtuse angle | angle more than 90 degrees |
| isosceles triangle | 2 equal sides |
| rhombus | parallelogram,all sides congruent |
| trapezoid | one pair of parallel sides |
| acute triangle | 3 acute angles |
| scalene triangle | zero equal sides |
| similar figures | related by same factor |
| hexagon | 6 sided figure |
| perpendicular lines | intersect: form right angle |
| line | points extending endlessly |
| angle | two rays with common endpoint |
| vertex | common endpoint in angle |
| point | exact location in space |
