# UCSS Math I 6.1.1 Example 4

- Author:
- Walch Education

A right triangle is defined as a triangle with 2 sides that are perpendicular.
Triangle

*ABC*has vertices*A*(–4, 8),*B*(–1, 2), and*C*(7, 6). Determine if this triangle is a right triangle. When disproving a figure, you only need to show one condition is not met.- Plot the triangle on a coordinate plane.
- Calculate the slope of each side using the general slope formula.
- Observe the slopes of each side.
- Make connections.

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