Across
- 3. Football field.
- 7. The surface of floor.
- 9. Two straight lines.
- 11. y=mx+b
- 12. When you look at yourself in the mirror.
Down
- 1. A plane inclined staircase.
- 2. A dot.
- 4. The corner of a room.
- 5. A pencil or a stick.
- 6. Two lines that don't touch.
- 8. Freeway cars are behind one another.
- 10. y2-y,=m(x2-x,)