Triangles

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Across
  1. 4. two circles of same raddii are _
  2. 5. figures of same size and same shape are called?
  3. 7. sides opposite to equal anglesa are_
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  1. 1. Triangle having all the three sides
  2. 2. _of a Parallelogram bisect it in 2 equal triangles
  3. 3. angle of an equilateral triangle _
  4. 6. congruence rule applied only in right angled triangle