Across
- 2. Three-dimensional figure in space bounded by polygons
- 5. Polygon bounded by five sides
- 6. Euclid described it as a "breadthless length" that extends without end in both directions
- 8. Polygon bounded by eight sides
- 11. Set of all points in a plane that are a fixed distance from a given point in the plane
- 14. Pair of rays that have the same endpoint
- 15. Type of reasoning based on logic
- 16. Polygon bounded by three sides
- 18. Tool for drawing line segments
- 19. Polygon bounded by six sides
- 20. Word derived from Greek words for "earth" and "measure"
- 21. Points that are contained in the same plane
- 25. Geometric drawings
- 26. Tool for measuring the degrees in an angle
- 28. Points that are contained by the same line
- 29. Part of a line bounded by two endpoints
- 30. The shared endpoints of two rays that form an angle
Down
- 1. Two-dimensional figure in a plane bounded by line segments
- 3. Points that are not contained by any single line
- 4. Part of a line that extends endlessly in one direction
- 7. The man who first presented geometry as a logical system of connected ideas
- 9. Point where two lines meet
- 10. Sum of the lengths of all sides
- 12. Title of the book written by Euclid circa 600 B.C.
- 13. Geometric element that is a location only
- 17. The number of unit-squares equal in measure to its surface
- 21. Lines that contain the same point
- 22. Distance between the center of a circle and any point on it
- 23. Polygon bounded by four sides
- 24. Type of reasoning based on observations
- 27. Flat unbounded surface
- 28. Tool used for drawing circles and arcs