Geometry Crossword

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Across
  1. 2. a quadrilateral with four equal sides
  2. 4. a part of a line with two end points
  3. 5. a ninety degree angle
  4. 7. a polygon with four sides and four angles
  5. 10. a polygon with one pair or parallel sides
  6. 11. the point where two sides meet
  7. 12. the flat surface of a 3D shape
  8. 13. the 3D version of a square
  9. 14. the distance around a figure
Down
  1. 1. a polygon made of one continuous line
  2. 3. a plane figure that can be folded along a line so the two parts match.
  3. 6. a triangle that has three equal sides
  4. 8. a triangle with two equal sides
  5. 9. the size a surface takes up (measured in square units)
  6. 15. a part of a line with one end point and goes in one direction without end