11. 12. and 13 please no links

1 answer:

6 0

Answer:

11. Classification on basis of angles - Acute angled triangle 

Classification on basis of sides - Isosceles triangle 

12. Classification on basis of angles - Right angled triangle. 

Classification on basis of sides - Scalene triangle 

13. Classification on basis of angles - Obtuse angled triangle. 

Classification on basis of sides - Isosceles triangle. 

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