math

1. – A line from the center of a circle to any point on its edge.
2. – Part of a line with two endpoints.
3. – The point where two lines or edges meet.
5. – Formed by two rays sharing a common endpoint.
9. – A polygon with four sides.
13. – An angle greater than 90 but less than 180 degrees.
14. – A polygon with six sides.
16. – A line that touches a circle at exactly one point.
17. – A three-sided polygon.
19. – A line that passes through the center of a circle, touching both sides.

1. – An angle that measures exactly 90 degrees.
4. – A closed figure with three or more straight sides.
6. – The total distance around a shape.
7. – A round shape where all points are equidistant from the center.
8. – When one shape becomes exactly like another if you flip, slide, or rotate it.
10. – The amount of space inside a two-dimensional shape.
11. – An angle smaller than 90 degrees.
12. – A straight path extending infinitely in both directions.
15. – Lines in a plane that never meet.
18. – A line segment connecting two points on a circle.