Geometry

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Across
  1. 1. a line passing through two parallel lines
  2. 2. the amount of space occupied
  3. 4. a quadrilateral with one set of parallel sides
  4. 6. a cube has _________ faces
  5. 9. line connecting opposite vertices
  6. 11. a rectangular prism has 3 ______________ faces
  7. 12. the diagonals of a square __________ each other
  8. 13. two times the radius of a circle
  9. 14. a six-sided polygon
  10. 15. a trapezium with non-parallel sides equal is ___________
  11. 17. a quadrilateral with all sides and opposite angles equal
  12. 18. lateral surface area of a cylinder
  13. 19. volume of a cuboid is measured in ____________
Down
  1. 1. another name for a triangular prism
  2. 3. measurements of a polygon
  3. 5. two lines bisecting each other at an angle of 90
  4. 7. a four sided polygon
  5. 8. a quadrilateral with opposite sides and angles equal
  6. 10. _________ angles in a parallelogram add up to 180
  7. 16. angles adding up to 180