Noun
The perpendicular from the center to one of the sides of a regular polygon.
A deposit formed in a liquid extract of a vegetable substance by exposure to the air.
Source: Webster's dictionaryThe isosceles triangle that is the face of such a pyramid can be constructed from the two halves of a diagonally split golden rectangle (of size semi-base by apothem), joining the medium-length edges to make the apothem. Source: Internet
Mathematical pyramids and triangles A pyramid in which the apothem (slant height along the bisector of a face) is equal to times the semi-base (half the base width) is sometimes called a golden pyramid. Source: Internet
Pyramids A regular square pyramid is determined by its medial right triangle, whose edges are the pyramid's apothem (a), semi-base (b), and height (h); the face inclination angle is also marked. Source: Internet
The area of a regular polygon is half its perimeter times the apothem (where the apothem is the distance from the center to the nearest point on any side). Source: Internet