Math project

2. a straight line extending from the center of a circle or sphere to the circumference or surface
3. a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end
6. a continuous extent of length
7. a rectangle having all four sides of equal length
8. 3.14
11. a position in space
14. an angle less than 90 degrees but greater than 0 degrees
16. a quadrilateral plane figure having two parallel and two nonparallel sides
18. a polygon having eight angles and eight sides
19. the distance around the edge of a shape
20. a polygon with four sides

1. a triangle with one internal angle equal to 90 degrees
4. a solid geometric figure with straight parallel sides and a circular or oval cross-section
5. one part of a line
8. a polygon with 5 sides and 5 angles
9. a solid or hollow object which tapers from a circular or roughly circular base to a point.
10. the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great.
12. the intersection point of two sides of a plane figure
13. the extent or measurement of a surface or piece of land.
15. a closed plane curve consisting of all points at a given distance from a point within it called the center
17. a monumental structure with a square or triangular base and sloping sides