| Term | Definition |
|---|
| area | measure of the region enclosed by the figure |
| base | bottom of a polygon |
| height | the length of the side that is perpendicular to the base |
| apothem | segment that connects center of a regular polygon to midpoint of opposite side perpendicularly |
| radius (of a regular polygon) | segment from center to a vertex |
| sector (of a circle) | region between two radii and the included arc |
| segment (of a circle) | region between a chord and the included arc |
| annulus (of a circle) | region between two concentric circles |
| probability | the chance that an event will occur |
| edges | the segments between lateral faces |
| slant height | altitude of a lateral face (use Pythagorean theorem to find) |
| A = bh | area formula for rectangles and parallelograms |
| A = 1/2bh | area formula for triangles |
| A = 1/2h(b1 + b2) | area formula for trapezoids |
| A = 1/2d1d2 | area formula for kites |
| A = 1/2ap | area formula for regular polygons |
| A = (pi)r^2 (= (pi)D^2/4) | area formula for circles |
| A = area of big polygon - area of small polygon | How do you find the shaded area inside a polygon? |
| A = a/360 x (pi)r^2 | area formula for sectors of a circle |
| A = area of sector - area of triangle (A = a/360 x (pi)r^2 - bh/2) | area formula for segments of a circle |
| A = big circle - small circle | area formula for annuli of a circle |
| P = shaded area / whole area | How do you find the probability that you will hit the shaded area inside a polygon? |
| SA = 2B + hp | surface area formula for prisms |
| SA = 2(pi)r^2 + 2(pi)rh | surface area formula for cylinders |
| SA = B + 1/2pl | surface area formula for pyramids |
| SA = (pi)r^2 + (pi)rl | surface area formula for cones |
Combine with other sets
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