Geometry

2. the ratio of the length of the adjacent side to the length of the hypotenuse
6. 2 quantities being compared
7. function or operation that reverses the effect of another
9. both pairs of opposite sides are parallel and equal in length
12. a four sided plane with opposites parallel
13. a line that touches a curve at a single point
14. one half of a sphere
15. distance from the center to any point on its circumference or surface
16. arc- a part of a circle's circumference that measures less than 180 degrees
19. a point where a line or curve intersects (crosses) a coordinate axis
20. typically refers to a right angle, which is an angle measuring exactly 90 degrees

1. the measurement of the surface inside a two-dimensional shape
3. the measure of a line's inclination or steepness
4. a straight, one-dimensional figure that extends infinitely in both directions
5. portion of a circle's circumference
8. a property where a shape or object can be divided into two or more identical or mirror-image parts
10. the amount of three-dimensional space a shape or object occupies
11. a three-dimensional geometric shape that tapers from a base
15. a quadrilateral and four-sided polygon with four right angles 90-degree angles
17. a four-sided shape (quadrilateral) with two pairs of adjacent, congruent sides
18. avg. set of numbers by adding then dividing