Area related to circle

3. A circle that passes through all the vertices of a polygon.
5. A circle drawn inside a polygon, tangent to all its sides.
8. Two or more circles that share the same center but have different radii.
13. The area formed by a chord and the larger arc of the circle.
15. The distance from the center of the circle to any point on its boundary.
18. The perpendicular drawn from the center of the circle to the tangent.
20. The length of any part of the circle's circumference.
21. A straight line joining two points on the circle's boundary.
23. The area of a section of the circle, enclosed by two radii and the arc between them.
25. The portion of the tangent between its point of contact and the point where it meets the circle.
26. An angle formed by two chords in a circle that have a common endpoint.
29. An arc that is less than half the circumference of the circle.
30. The total distance around the circle, calculated as 2πr.

1. The angle formed at the center of the circle by two radii.
2. The perpendicular distance from the center of the circle to a chord.
4. The relationship between a chord and a tangent drawn from the same point.
6. A quadrilateral with all its vertices lying on a single circle.
7. A vector that extends from the center of the circle to any point on its circumference.
9. The length of the radius of a sector of the circle.
10. A line that touches the circle at exactly one point, perpendicular to the radius at that point.
11. The degree measure of an arc, corresponding to the central angle.
12. The point where the tangent touches the circle.
14. A part of a circle's chord between two points on the boundary.
16. The relationship between the radius and the chord length.
17. The area of the part of the circle between a chord and the corresponding arc.
19. A straight line passing through the center of the circle, touching two points on the boundary.
22. The length of the radius of a segment of the circle.
24. An arc that represents half of a circle's circumference.
27. The area formed by a chord and the smaller arc of the circle.
28. An arc that is more than half the circumference of the circle.