| A | B |
|---|
| area | The measure of the region enclosed by the figure |
| Formula for rhe area of a parallelogram | A = bh |
| Formulas for the area of a triangle | A = 1/2 bh |
| Formula for the area of a trapezoid | A = 1/2 (b1+b1)h |
| Formula for the area of a kite | A=1/2 d1d2 |
| Formula for the area of a regular polygon | A=1/2 aP |
| parallelogram | A quadrilateral in which both pairs of opposite sides of a parallel |
| triangle | A three-sided polygon |
| trapezoid | A quadrilateral with exactly one pair of parallel sides |
| kite | A quadrilateral with exactly two distinct pairs of congruent consecutive sides |
| regular polygon | A polygon that is both equlateral and equianglular |
| Formula for the area of a circle | A = πr^2 |
| Formula for the circumference of a circle | C = 2πr |
| sector of a circle | The region between a central angle and the arc it intercepts |
| central angle | An angle whose vertex is the center of a circle and whose sides pass through the endpoints of a chord or arc |
| arc of a circle | Two points on the circle (the endpoints of the arc) and the points of the circle between them. |
| segment of a circle | The region between a chord and the included arc. |
| annulus | The region between two concentric circles of unequal radius |
| concentric circles | Circles having the same center. |
| Formula for the area of a sector of a circle | A = (θ/360)πr^2 |
| Formula for the area of a segment of a circle | A = (θ/360)πr^2 - 1/2 bh |
| Formula for the area of an annulus | A = πR^2 - πr^2 |
| Formula for the surface area of a cylinder | SA = 2πr^2 + 2πrh |
| chord | A segment whose endpoints lie on a circle |
