Equilateral triangle a triangle with any two sides "a" and "b", and an angle "C" between them is Each angle of an equilateral triangle is 60°, so The sine of 60° is formula_50. Thus since all sides of an equilateral triangle are equal. Equilateral triangles have frequently appeared in man made constructions: Equilateral triangle In geometry, an equilateral triangle is a triangle in which all three sides are equal. In the familiar Euclidean geometry, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°. It is also a regular polygon,
Gewehr 98 internal magazine boxes feature an internal magazine length of to store maximal overall length 7.92×57mm Mauser cartridges without dimensional issues. The cartridges are stored in the magazine box in a staggered column at a stacking angle of 30 degrees, so viewed from the end, three cartridges touching each other form the points of an equilateral triangle. The magazine can be loaded with single rounds by pushing the cartridges into the receiver top opening or via stripper clips. Each stripper clip can hold 5 rounds to fill the magazine and is inserted into clip guides machined into the rear receiver bridge.