vertices I think
point of a shape or object
the vertext
21
In geometry, a vertex is a point where two or more line segments, lines, or rays meet to form an angle. It is the common endpoint of these geometric elements. Vertices are crucial in defining the shape and structure of geometric figures such as polygons, polyhedra, and graphs. The plural form of vertex is vertices.
(180 - 36) / 2 = 72
The plural of "she" is "they", so the plural of "she had" is "they had".
The plural of 'this' is 'these' and the plural of 'that' is 'those'.
Isthmi is plural. There are actually two plural forms. I will list them from singular to plural. Isthmus - Singular Isthmi - Plural Isthmuses - Plural
The plural of rose is roses. The plural possessive is roses'.
The plural form of can is cans.
Knights is a plural. It is the plural for knight.
applied is does not have a plural but is apply it does have a plural.