triangle of forces
Also found in: Dictionary, Wikipedia.
triangle of forces[′trī‚aŋ·gəl əv ′fȯr·səs]
A triangle, two of whose sides represent forces acting on a particle, while the third represents the combined effect of these forces.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.