maths Triangles

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Across
  1. 5. triangle which has no equal sides
  2. 6. triangle which has one angle less than 90 degree
  3. 7. triangle which as all sides equal
Down
  1. 1. triangle which has one angle as 90 degree
  2. 2. triangle which has one angle more than 90 degree
  3. 3. triangle which has two equal sides
  4. 4. shape which has three angles and sides