Across
- 1. means to lie on the same plane
- 3. imagine has no dimension
- 4. all sides are congruent and have angles acute or obtuse
- 8. polygon with 4 sides
- 9. to lie into same line
- 12. subset of a line which have two endpoints
- 14. straight infinite length
- 15. all angles are congruent
Down
- 2. two rays lying on the same line
- 5. if they touch two lines at a certain point
- 6. each sides are pararell and conguent
- 7. infinite width and height but no thickness
- 10. all its angles are rigth angles
- 11. Union of two collinear rays
- 13. polygon with 3 sides