| A | B |
|---|
| Formula: Area of a parallelogram | b*h |
| Formula: Area of a triangle | 1/2 b*h |
| Formula: Area of a trapezoid | 1/2 h(b1 + b2) |
| Formula: Area of a circle | pi times radius squared |
| Forumula: Circumference of a circle | pi times diameter |
| Surface Area | Sum of areas of all sides |
| Formula: Volume of a prism | Area of base times height |
| Formula: Volume of a cone or pyramid | 1/3 the Area of base times height |
| A triangle with all equal sides | Equilateral |
| A triangle with two equal sides | Isosceles |
| A triangle with no sides equal | Scalene |
| Triangle with all angles less than 90 degrees | Acute |
| Triangle with one 90 degree angle | Right |
| Triangle with one angle greater than 90 degrees | Obtuse |
| A parallelogram with all sides equal and no right angles | Rhombus |
| A four sided figure with one pair of parallel sides | Trapezoid |
| Sum of all angles of a triangle | 180 degrees |
| Two angles whose sum is 90 degrees | Complementary |
| Two angles whose sum is 180 degrees | Supplementary |
| In right triangle, the side across from the right angle | Hypotenuse |
| In a triangle, the line connecting a vertex to the opposite side at a perpendicular | Altitude |
| A four sided polygon | Quadrilateral |
| A five sided polygon | Pentagon |
| A six sided polygon | Hexagon |
| An eight sided polygon | Octagon |
| A ten sided polygon | Decagon |
| Figures that are the same size and shape are said to be... | Congruent |
| A line that crosses two parallel lines | Transversal |
| Distance around a circle | Circumference |
| A line segment that joins any two points on a circle | Chord |
