CCSS IP Math I 6.1.1 Example 4
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.