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Python – Sympy Triangle.is_isosceles() method
• Last Updated : 26 May, 2020
In Sympy, the function Triangle.is_isosceles() is used to check whether the given triangle is Isosceles triangle or not. Isosceles Triangle is the triangle in which two or more of the sides are of the same length.
```Syntax: Triangle.is_isosceles()

Returns:
True: if it is isosceles, otherwise False
```

Example #1:

 `# import Triangle, Point``from` `sympy.geometry ``import` `Triangle, Point`` ` `# using Triangle()``t1 ``=` `Triangle(Point(``0``, ``0``), Point(``6``, ``0``), Point(``3``, ``4``))`` ` `# using is_isosceles()``isIsosceles ``=` `t1.is_isosceles()``print``(isIsosceles)`

Output:

`True`

Example #2:

 `# import Triangle, Point``from` `sympy.geometry ``import` `Triangle, Point`` ` `# using Triangle()``t2 ``=` `Triangle(Point(``0``, ``0``), Point(``3``, ``0``), Point(``3``, ``4``))`` ` `# using is_isosceles()``isIsosceles ``=` `t2.is_isosceles()``print``(isIsosceles)`

Output:

`False`

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