Python | Sympy Line.perpendicular_line method

Python | Sympy Line.is_parallel() method

Last Updated : 25 Apr, 2025

In Sympy, the function is_parallel() is used to check whether the two linear entities are parallel or not.

Syntax: Line.is_parallel(l2)

Parameters:
 l1: LinearEntity
 l2: LinearEntity

Returns:
 True: if l1 and l2 are parallel,
 False: otherwise.

Example #1:

Python3 1==

# import sympy and Point, Line
from sympy import Point, Line

p1, p2 = Point(0, 0), Point(1, 1)
p3, p4 = Point(3, 4), Point(6, 7)

l1, l2 = Line(p1, p2), Line(p3, p4)

# using is_parallel() method
isParallel = Line.is_parallel(l1, l2)

print(isParallel)

Output:

True

Example #2:

Python3 1==

# import sympy and Point, Line
from sympy import Point, Line

p1, p2 = Point(0, 0), Point(1, 1)
p3, p4 = Point(3, 4), Point(6, 6)

l1, l2 = Line(p1, p2), Line(p3, p4)

# using is_parallel() method
isParallel = Line.is_parallel(l1, l2)

print(isParallel)

Output:

False

Python | Sympy Line.perpendicular_line method

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