Math project. >:(

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Across
  1. 5. A type of triangle
  2. 6. A corner where two or more lines meet.
  3. 7. A six side layout of a 3D shape laied out.
  4. 8. a 90 degree angle in a shape.
  5. 9. The points on a grid
  6. 11. the area on a 3 dimensional shape.
  7. 12. A equal sided snow.
  8. 13. A 2D shape formed with straight lines.
  9. 15. The outside squares of a shape.
Down
  1. 1. A triangle with 3 different sides.
  2. 2. A triangle that has two same sides and one different side
  3. 3. The length multiplied with the height and width.
  4. 4. Two lines that cross or intersect.
  5. 10. The space that is in a shape.
  6. 14. A 3 dimensional shape with the same sides.