Mathematics crossword(2) for class 7

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Across
  1. 4. Two right angles are ....... to each other
  2. 5. (8/9) is a ......... fraction
  3. 8. Sum of two angles is 180 degree
  4. 10. The supplement of an acute is always......angle
  5. 13. (a + b) + c = a + (b + c)
Down
  1. 1. A triangle having all sides equal
  2. 2. The product of 2 improper fractions is..... than each of the 2 fractions.
  3. 3. The property that states a(b + C) =ab + ac
  4. 6. Vertically opposite angles are always ........
  5. 7. The two lines are intersected by a line at distinct points
  6. 9. a + b = b + a
  7. 11. Tossing a coin gives ....... outcomes.
  8. 12. The supplement of a right angle is always ....... angle