Question

name the polygon according to the number of sides. then identify whether it is convex or concave.
what is the name of the polygon?
dodecagon
quadrilateral
octagon
hexagon
decagon
nonagon
heptagon
pentagon
the polygon is
concave.
convex.

Explanation:

Step1: Count the number of sides

A quadrilateral has 4 sides.

Step2: Determine convex or concave

In a convex polygon, all interior angles are less than 180 degrees and all diagonals are inside the polygon. A square (a type of quadrilateral) has all interior angles equal to 90 degrees and all diagonals inside, so it is convex.

Answer:

quadrilateral, convex