Swastik Rastogi 9E HHW

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Across
  1. 5. A quadrilateral in which opposite sides are parallel
  2. 6. It is a curve which does not cross itself
  3. 8. It is also called repeated subtraction
  4. 10. A type of triangle with no sides equal
  5. 12. A polygon which is made up of 3 line segments
  6. 13. The continuous line forming the boundary of a closed figure
  7. 15. If 2 adjacent angles are supplementary they form a _.
  8. 16. Perimeter of a circle
  9. 17. The study of shapes
  10. 19. The collection of rational and irrational numbers
Down
  1. 1. It it also called repeated addition
  2. 2. The side which is opposite to the right angle in a right angled triangle
  3. 3. A type of triangle with just 2 sides equal
  4. 4. A straight line from the centre to the circumference of a circle
  5. 7. An angle of measure greater than 0 degrees but less than 90 degrees
  6. 9. A straight line passing from side to side through the centre of a circle
  7. 11. These are assumptions which are universal truths and do not need to be proven
  8. 12. They need to be proved using statements
  9. 14. A round shape which has no edges or corners
  10. 18. The collection of positive and negative numbers