HELP PLEASE
Scalene
Isosceles
Equilateral

1- Scalene triangle

2- Equilateral triangle

3- Isosceles triangle

4- Equilateral triangle

Here's the explanation if you need it :

For a scalene triangle, all the sides are different whereas an Equilateral triangle has equal sides. And finally for an Isosceles triangle, two sides are equal.

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step-by-step explanation:

i used the pitagoras theoreme