Across
- 3. An angle less than 90 degrees but more than 0 degrees
- 4. The space between two lines or planes that intersect
- 7. A parallelogram with four equal sides.
- 9. the 90 degree angle between two perpendicular lines
- 11. An area that is in the middle of some larger region
- 12. A quantity obtained by the addition of a group of numbers
- 13. A continuous potion of a circle
- 14. Another word for mathematics
- 15. A parallelogram with four right angles
Down
- 1. A three-sided polygon
- 2. A line enclosing a plane area
- 5. The middle point of a line
- 6. two angles whose sum upto a right angle
- 8. The space between two things
- 9. A straight line from the center of the perimeter of a circle
- 10. The length of a straight line through the center or circle