Circle

3. circle a circle that passes through all the vertices of the polygon
4. divide into two equal parts
5. half of diameter
7. a straight line segment whose endpoints both lie on the circle.
11. two lines which meet at a right angle
12. a polygon with four edges and four vertices
13. a polygon with three edges and three vertices
14. a triangle that has two sides of equal length
19. between any side of a shape
21. a triangle center
22. the angle between adjacent sides of a rectilinear figure.
24. two circle intersect in exactly one point and the intersection of their interiors is not empty.
26. a twelve-sided polygon
28. a line which touches a circle or ellipse at just one point
30. a nine-sided polygon

1. distance around the edge of a circle
2. a shape with 4 equal sides and every angle is a right angle
4. the center of mass
6. each vertex of the triangle lies on the circle
8. the longest chord
9. is any five-sided polygon
10. two circle intersect inexactly one point and their intersection of their interiors is empty
11. a plane shape with straight sides
15. the portion of a disc enclosed by two radii and a circular arc
16. a line that intersects the curve in at least two (distinct) points
17. a six-sided polygon
18. a seven-sided polygon
19. a triangle in which all three sides are equal
20. A ∩ B of two sets A and B is the set that contains all elements of A that also belong to B
23. a polygon that is equiangular and equilateral
25. an eight-sided polygon
27. a line segment from the center to the midpoint of one of its sides
29. a ten-sided polygon