Geometry Crossword Puzzle

1234567891011121314151617181920
Across
  1. 5. a quadrilateral with both pairs of opposite sides parallel
  2. 6. a solid, or three-dimensional figure whose surface is made up of polygons
  3. 9. point where three angle bisectors from three vertices of the triangle meet
  4. 12. quotient of two quantities
  5. 14. set of all points equidistant from a given point
  6. 17. has one endpoint at the center and the other endpoint on the circle
  7. 18. number of square units it encloses
  8. 19. a parallelogram with four congruent sides and four congruent angles
  9. 20. distance around a circle
Down
  1. 1. formed by three noncollinear points connected by segments
  2. 2. middle point of a line segment
  3. 3. set of all points in space equidistant from a given point called the center
  4. 4. a segment that contains the center of a circle
  5. 5. extends in two dimensions without end
  6. 7. point where all three altitudes of the triangle intersect
  7. 8. line that divides something into two equal parts
  8. 10. intersects two or more coplanar lines at different points.
  9. 11. educated guess
  10. 13. when three or more lines intersect at one point
  11. 15. set of all points in three dimensions
  12. 16. the distance around the figure