| A | B |
|---|
| Covex | no line containing a side of the polygon contains a point in the interior of the polygon |
| concave | nonconvex |
| regular | all sides and angles are congruent - convex |
| sum of the interior angles of a polygon | (n-2)180 |
| sum of the exterior angles of a polygon | 360 |
| one interior angle of a regular polygon | {(n-2)180}/n |
| One exterior angle of a regular polygon | 360/n |
| Area of p-gram | bh |
| area of rectangle` | length(width) |
| area of square | (side)(side) |
| area of triangle | 1/2(bh) |
| area of rhombus | 1/2(diagonal)(diagonal) |
| area of trapezoid | 1/2(h)(base+base) |
| area of regular polygon | 1/2(ap) |
| apothem | the perp. segment from the center to a side |
| area of circle | (pi)(radius)(radius) |
| circumference | 2(pi)(radius |
| area of sector | (N/360)(pi)(radius)(radius) |
| arc length | (N/360)(2)(pi)(radius) |
| 3 sided polygon | triangle |
| 4 sided polygon | quadrilateral |
| 5 sided polygon | pentagon |
| 6 sided polygon | hexagon |
| 7 sided polygon | heptagon |
| 8sided polygon | octagon |
| 10 sided polygon | decagon |
| 12 sided polygon | dodecagon |
| n sided polygon | n-gon |
| polyhedra | solids formed by regions shaped like polygons that share a common side (3-d) |
| an interior and exterior angle (at the same vertex) are always... | supplementary |
| The base and the height of any polygon are always _______ to each other | perpendicular |
| When labeling the units for area problems it is always... | squared (units, centimeters, etc. squared) |
| Is the measure of an arc and the arc lengt the same thing? | NO - the measure is in degrees and the arc length is cm or m or units |
