Liam's Geometry puzzle

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Across
  1. 2. The number of square iunits to cover a 2D shape..
  2. 6. A three sided shape, think of the root word tri.
  3. 8. Less than 90 degrees, not a right angle.
  4. 10. A ten sided shape,srating to look like a circle
  5. 11. A circular polygon, think of a pole
  6. 13. Circular pyramid, and used in construction.
  7. 15. A 3d shape with one base, There is some in egypt.
  8. 16. The length of all the sides, a fence is a type of what?
Down
  1. 1. A six sided shape, one bigger than a pentagon.
  2. 3. More than 90 degrees, not a right angle.
  3. 4. A four sided shape, Two sets of congruent sides.
  4. 5. A eight sided shape, a stop sigh.
  5. 7. A four sided shape, with equal sides.
  6. 9. A 5 sided shape, a government building.
  7. 12. Half of a circle, distance from the center of a circle to the edge.
  8. 14. A 3d circle, the shape of your eye ball.