Final answer:
The three points that make up a forklift's stability triangle are the two front wheels and the pivot point of the rear steering axle. This triangle is essential for equilibrium and safety when operating the forklift.
Step-by-step explanation:
The three points of a forklift that make up the stability triangle are the two front wheels and the pivot point of the steering axle at the rear wheel. This stability triangle is crucial for maintaining balance and preventing tip-overs when a forklift is carrying loads. When the center of gravity, which is the point where all of a forklift's weight is concentrated, remains within this triangle, the forklift is in stable equilibrium. If the center of gravity moves outside this triangle, due to improper loading or turning too sharply, the forklift can become unstable and tip over. To ensure safety and maintain stability, forklift operators are trained to understand and respect the stability triangle by properly distributing loads and navigating turns.