Geometry

123456789101112
Across
  1. 3. A straight line from the center to the perimeter of a circle
  2. 8. A plane curve with every point equidistant from the center
  3. 9. at an angle of 90° to another line or surface
  4. 10. An angle between 90 and 180 degrees
  5. 11. A straight line joining two opposite corners of a square, rectangle, or other straight-sided shape.
Down
  1. 1. The length of a straight line through the center of a circle
  2. 2. All of; entire.
  3. 4. A shape with a circular base and sides tapering to a point
  4. 5. being everywhere equidistant and not intersecting
  5. 6. A line or outline which gradually deviates from being straight for some or all of its length.
  6. 7. A three-sided polygon
  7. 8. An area that is in the middle of some larger region
  8. 12. An angle less than 90 degrees but more than 0 degrees