Example 4

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. Note: Drag points , , and to try different figures.
  1. Plot the triangle on a coordinate plane.
  2. Calculate the slope of each side using the general slope formula.
  3. Observe the slope of each side.
  4. Make connections.
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