Covering and surrounding 2.0

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Across
  1. 3. two numbers that show the location on a two dimensional plane
  2. 4. a closed figure made up of line segments (not curved) in a two dimensional plane
  3. 5. a point where two or more curves/ lines/ edges intersect
  4. 6. the amount of cubes needed to fill a 3d shape
  5. 7. a 3d shape with triangle faces
  6. 10. a angle that is perfectly 90 degrees
  7. 11. a 3d object unfolded or flat and spreaded out
  8. 13. a triangle with two equal sides
  9. 14. the amount of units that cover the surface of a closed figure
Down
  1. 1. the amount of units on the outside of a 2d shape
  2. 2. all the sides and interior angles of the polygons are equal
  3. 4. a line that makes a right angle with another line
  4. 8. a three dimensional solid object in which the two ends are identical
  5. 9. measures the space needed to cover the outside of a three-dimensional shape
  6. 12. a triangle that has three unequal sides