Across
- 3. a 4 sided triangle
- 5. x then y
- 7. all angles are the same
- 9. a closed two dimensional figure
- 10. the points where two or more lines intersect
- 11. lines that connect at a corner
- 13. the area inside the perimeter
Down
- 1. a traingle that has 2 sides
- 2. a triangle whose all three sides have different lengths
- 4. mass
- 6. add together the lengths of all the sides
- 7. angle a 90 degree angle
- 8. a 2d picture of a box
- 9. a 3d triangle
- 12. length x width