Consider the octagon. An octagon.

Octagons are eight-sided polygons.

Imagine drawing the diagonals from one vertex to all of the non-adjacent vertices.

How many triangles are necessary to construct an octagon?

triangles
The formula for finding the sum of the interior angle measures of any polygon is (n – 2)(180°).

The sum of the interior angle measures of an octagon is
°.

Lines in art can be either actual or

What argument does the author make in this excerpt from cannibals all! or, slaves without masters, written by george fitzhugh in 1857?

Hurrywhat best describes an a. instruments that produce a sound through vibrating column of air, including the woodwind and brass family.b. simple, solid instruments that produce sound by being struck, scraped, or shakenc. instruments that produce sound by striking or rubbing a skin or membrane stretched across a resonating air chamberd. instruments that produce sound when a string or chord is struck, rubbed, or plucked