Circle Review

2. sum of all the interior angles is 1440°
6. a regular quadrilateral, which means that it has four equal sides and four equal angles
8. a 5-sided polygon
9. the set of all points in a plane that are at a given distance from a given point
11. to divide something into two equal parts
17. a triangle in which all three sides are equal
18. a figure with at least three straight sides and angles
19. the intersection of the medians
21. a point or line common to lines or surfaces that intersect
23. a shape with seven straight sides
27. dozen
28. a polygon that is equiangular and equilateral
29. a triangle that has two sides of equal length
32. occur when two circles on the same plane intersect at exactly one point, but one circle lies outside the other circle
33. the regular one has 27 diagonals

1. the point where the angle bisectors intersect
3. an angle formed between the side of a shape and the side next to it, when this side is extended
4. occur when two circles on the same plane intersect at exactly one point and one circle lies within the other
5. an angle of a polygon contained between two adjacent sides
7. a polygon with four edges (or sides) and four vertices
10. a line segment extending from the center of a circle or sphere to the circumference
12. perimeter of a circle
13. the sum of all the internal angles of it is 1080°
14. a circle which passes through all the vertices of the polygon
15. at an angle of 90° to a given line
16. a line from the center of a regular polygon at right angles to any of its sides
20. a triangle that has all of its vertices on a circle
22. a straight line intersecting the circle at two points
24. part of the circumference
25. a straight line that touches the circle at one point
26. a polygon with three edges and three vertice
30. the plane figure enclosed by two radii of a circle or ellipse and the arc between them
31. honeycombed