Across
- 3. father of geometry
- 5. flat and 2-dimensional
- 6. statement assumed to be true without proof
- 7. not flat and 3-dimensional
- 8. location designated by a point
- 9. part of a line with a fixed starting point and no endpoint
- 11. formed by two rays and common endpoint
- 12. statement that needs to be proven to be true
- 13. two nonintersecting lines going in two directions
Down
- 1. part of a line that has two endpoint
- 2. two lines cross at 90 degrees
- 4. continuous in both directions and straight
- 8. two nonintersecting lines going in same direction
- 10. points, lines and planes are _______ terms