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