# Example 4

- Author:
- Walch Education

A right triangle is defined as a triangle with 2 sides that are perpendicular.
Triangle has vertices , , and .
Determine if this triangle is a right triangle. When disproving a figure, you only need to show one condition is not met.
, , and to try different figures.

*Note*: Drag points- Plot the triangle on a coordinate plane.
- Calculate the slope of each side using the general slope formula.
- Observe the slope of each side.
- Make connections.