Question

What are the two ways to show that a triangle is a right triangle

Answer 1

See below

Explanation:

One method is to see if all sides of the triangle follow the Pythagorean Theorem since its only applicable for right triangles.

Another method is to check if the sides of the triangle have opposite reciprocal slopes since perpendicular lines form a right angle.

You don't specify any answer choices, so hopefully these are close to them.