crossword puzzle

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Across
  1. 1. the total square units around the outside of a two and three dimensional shape
  2. 5. a point from one another
  3. 6. a three dimensional triangle that has more than 3 sides
  4. 7. The square unit of the inside of a shape
  5. 8. a shape with the total of three sides
  6. 12. it is a triangle that has two sides that are equal to one another
  7. 14. two lines that are crossing different directions and can be different sizes
  8. 15. the inside of three dimensional shape
Down
  1. 2. a angle with 90 degrees
  2. 3. a shape with all equal sides
  3. 4. the area of the perimeter
  4. 9. An equation of a problem and the number of the equation
  5. 10. the sides are different and the lengths are different
  6. 11. a three dimensional shape with all parallel sides
  7. 13. a way to see how a three dimensional shape will look like when flaten