Mathematics

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Across
  1. 2. flat surface of an object
  2. 3. when we reduce the original amount it is known as
  3. 6. 3D shape of rectangle
  4. 7. angle which is 90 degree
  5. 8. the line segment which joins faces
  6. 10. when we add extra amount to the cost price
Down
  1. 1. the place where edges meet
  2. 4. angle more than 90 degree
  3. 5. four sided shapes
  4. 9. reduction of cost price