| A | B |
|---|
 | Circle |
| a plane shape bounded by a continuous line which is always the same distance from the center | Circle |
 | Equilateral Polygon |
| a polygon which has all sides the same length | Equilateral Polygon |
 | Equilateral Triangle |
| a triangle with 3 equal sides and 3 equal angles | Equilateral Triangle |
 | Isosceles Triangle |
| a triangle with only 2 equal sides and 2 equal angles | Isosceles Triangle |
 | Octagon |
| a polygon with eight sides | Octagon |
 | Rectangle |
| a quadrilateral with four right angles, and opposite equal parallel sides | Rectangle |
 | Obtuse Angle |
| any angle between 90° and 180° | Obtuse Angle |
 | Scalene Triangle |
| a triangle whose three sides are each a different length | Scalene Triangle |
 | Square |
| a quadrilateral with four equal sides and four right angles, and opposite sides that are parallel. | Square |
 | Acute Angle |
| an angle less than 90 degrees | Acute Angle |
 | Polygon |
| a plane shape that has 3 or more straight sides | Polygon |
 | Parallel Lines |
| lines that are the same distance apart; the lines never meet no matter how far they go | Parallel Lines |
 | Rectangular Prism |
| a prism with two identical rectangular bases | Rectangular Prism |
 | Right Angle |
| an angle measuring 90° | Right Angle |
 | Perpendicular Lines |
| lines that intersect at right (90°) angles | Perpendicular Lines |
