Across
- 4. the property created by the space between two objects
- 5. ... lines never intersect
- 8. a four-sided polygon
- 10. an angle less than 90 degrees but more than 0 degrees
- 11. the 90 degree angle between two perpendicular lines
- 12. a triangle with one right angle
- 13. a shape with a circular base and sides tapering to a point
- 15. a straight or curved continuous extent of length
Down
- 1. the length of a straight line through the center of a circle
- 2. an angle between 90 and 180 degrees
- 3. determine the dimensions of something or somebody
- 6. a triangle whose interior angles are all acute
- 7. a shape with four equal sides and four right angles
- 9. a straight line from the center to the perimeter of a circle
- 14. an area that is in the middle of some larger region