On a coordinate plane, triangle L M N is shown. Point L is at (negative 3, 4), point M is at (negative 3, negative 1), and point N is at (2, negative 1).
What is true about triangle LMN? Check all that apply.

LM ⊥ MN.
The triangle is scalene.
The triangle is equilateral.
The triangle is isosceles.
The triangle is a right triangle.