In a regular polygon, we have an apothem, a number and a length of sides which do not belong to the base class shape. |
In the Pyramid Cheops, altitude is very nearly a mean proportional between apothem and half base. |
In any pyramid, the apothem is to half the base as the area of the four sides is to the area of the base. |
Once the perimeter and the apothem are known, the formula relating the two to area can be used to solve for the area. |
The Arc, Chord, Radius, Height, Angle, Apothem, and Area Suppose you have a segment of a circle, bounded by an arc of the circle and the chord subtending it. |
We can find the apothem from the side length and the number of sides. |