A look at triangular shaped objects and their uses.
No title - Triangle.
Probably filmed at Pathe studios, London.
Various shots of different shapes in a book. A 'professor' draws a triangle on a board, it turns into a dunce's cap on boy's head. M/S of diagram of ancient Greek triangle symbols denoting numbers. M/S of triangle as a danger sign. M/S as the musical triangle is played. Various shots of different triangles and diagrams plotting stars, a sailor looks through a sextant.
A diagram shows that a triangle always equals two right angles. M/S of the pyramids, a diagram shows how they were built. M/S of army range finder, M/S of a wedge and a screw which is a triangle that has been wound up. M/S of talisman symbols, M/S of the triangle signifying world, flesh, devil. M/S silhouette of a couple in an embrace, her husband comes home and is furious, this is the eternal triangle!