Find the Number of Diagonals of a Nonagon (9 Sides)

question 138

Multiple Choice

Find the number of diagonals of a nonagon (9 sides) . (A line segment connecting any two nonadjacent vertices is called a diagonal of the polygon.)

• A)27
• B)72
• C)81
• D)9
• E)18

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Definitions:

Lineages

Sequences of species that have evolved from a common ancestor, depicted in family trees showing evolutionary relationships.

Extrinsic Postzygotic Isolation

A reproductive barrier where offspring of two different species are viable and fertile, but external factors prevent them from thriving.

Mimetic

Relating to or involving mimicry, often used to describe organisms that imitate other species or their environment for survival benefits.

Viable/Fertile Offspring

Offspring that are capable of surviving to maturity and reproducing, indicating successful genetic compatibility between parents.