math puzzle thing

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Across
  1. 5. a three dimensional shape with one polygonal base and lateral sides that are all triangles that meet at a vertex opposite at the base.
  2. 6. A corner of a polygon.
  3. 7. a two dimensional pattern that can be folded into a three dimensional figure.
  4. 8. An angle that measures 90 degrees.
  5. 9. An order pair of numbers used to locate a point on a coordinate grid.
  6. 11. the area required to cover a three dimensional shape.
  7. 12. a polygon that has all of its sides and angles equal.
  8. 13. a shape formed by three or more line segments
  9. 15. the measure of the distance around a figure
Down
  1. 1. a triangle with no sides equal.
  2. 2. a triangle with two sides the equal length.
  3. 3. The amount of space occupied by or the capacity of a three dimensional shape.
  4. 4. Lines that meet at right angles
  5. 10. The measure of the amount of surface enclosed by the boundary of a figure
  6. 14. a three dimensional shape with a top and bottom that are congruent polygons and lateral faces that are parallelograms.