You'll test the stability of a triangle and a square by standing them on a table and pressing on them. The one that changes shape less is more stable. 1. With your partner, build a triangle and a ...

The triangle doesn't bend because each side experiences only one force at a time. When used properly, triangles are the most stable and rigid shapes used in construction today.

A telehandler is most stable when its "stability triangle" is large, explains Randy Reeves, sales manager, Xtreme Mfg. The stability triangle is the area formed between three imaginary points ...