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.

i.  LM ⊥ MN

ii. The triangle is a right triangle.

Step-by-step explanation:

A triangle is a shape with three angles and three sides. And the sum of all angles in any given triangle is . Triangles can be classified with respect to its angles or sides.

From the diagram , we can deduce from triangle LMN that:

The sides LM and MN are perpendicular (i.e the two lines forms an angle of ) to each other.

From critical observation, it can be concluded that the triangle is a right angled triangle. This is because two of its sides are at a right angle to each other.

i think it would be 42cm