Explanation:
1. A four-sided polygon is a/an
a. octagon
b. hexagon
c. quadrilateral
d. pentagon
e. heptagon,
2. a five-sided polygon is a/an
a. heptagon
b. quadrilateral
c. pentagon
d. octagon
e. hexagon
3. a six-sided polygon is a/an
a. pentagon
b. octagon,
c. heptagon
d. hexagon
e. quadrilateral
4. a seven-sided polygon is a/an
a. quadrilateral
b. pentagon
c. hexagon
d. octagon
e. heptagon
5. an eight-sided polygon is a/an
a. quadrilateral
b. pentagon
c. hexagon
d. octagon
e. heptagon
Bold and underlined words are answers.