Geometry

2. a polygon which is equilateral and equiangular.
5. a segment that connects two points on the circle.
9. are noncoplanar lines they will not intersect. Polygon union of 3 or more coplanar segments that meet only at endpoints such that at most two segments meet at one endpoint and each segment meets exactly two other segments.
11. two angles whose sum is 90 degrees. 31. Supplementary angles – two angles whose sum is 180 degrees.
13. π
15. line, ray segment, or plane divides a segment into two congruent segments.
16. a circle angle whose vertex is the center of the circle and whose rays are radii of the circle.
18. r2
19. half the diameter

1. length of the circle
3. two coplanar angles with a common vertex and a common side between them
4. a point that divides the segment into two congruent segments.
6. two lines that intersect to form right angles. 33. Parallel lines – two lines are parallel if they are coplanar and do not intersect.
7. sum of the area of all its faces.
8. the non-adjacent angles formed by two intersecting lines.
10. six sides
12. triangle triangle with all sides congruent.
14. half the central angle
17. a line in the plane of the circle that intersects the circle at a 90 degree angle