Across
- 3. the distance around a circle
- 5. the total distance around a figure
- 7. Area, the total area of all the outer surfaces of a 3D object
- 9. an exact location with no size
- 13. a straight path that goes on forever In both directions
- 14. the point where two lines or rays meet
- 15. when a shape can be divided into matching halves
- 17. a segment across a circle through the center; twice the radius
- 19. the amount of space inside a 3D object
- 20. a closed figure made of straight line segments
Down
- 1. two rays that meet at a common end point
- 2. Lines, Lines that intersect to form right angles
- 4. a set of points all the same distance from a center point
- 6. a polygon with 4 sides
- 8. a segment from the center of a circle to its edge
- 10. a polygon with three sides
- 11. Segment, part of a line with two end points
- 12. Lines, Lines that never intersect and stay the same distance apart
- 16. part of a line with one endpoint that goes on forever In one direction
- 18. the amount of space inside a shape