# SIDE

, *latus,* in Geometry. The side of a figure is
a line making part of the periphery of any superficial
figure, viz, a part between two successive angles.

In triangles, the sides are also called *legs.* In a rightangled
triangle, the two sides that include the right
angle, are called *catheti,* or sometimes the *base* and *perpendicular;*
and the third side, the *hypothenuse.*

Side *of a Polygonal Number,* is the number of terms
in the arithmetical progression that are summed up to
form the number.

Side *of a Power,* is what is usually called the root
or radix.

Sides of *Horn-works, Crown-works, Double-tenailles,*
&c, are the ramparts and parapets which inclose them
on the right and lest, from the gorge to the head.