11.4

Question 1

Theorem 11.6: Area of an Equilateral Triangle Thm.

Answer 1

A = root 3/4 * s^2

Question 2

Center of a Regular Polygon

Answer 2

center of the circle circumscribed about the polygon

Question 3

Radius of a Regular Polygon

Answer 3

radius of the circumscribed circle

**Note: each radius of a regular polygon joins the center with each vertex

Question 4

Apothem

Answer 4

distance between the center and a side

Question 5

Central Angle of a Regular Polygon

Answer 5

an angle whose vertex is the center and whose sides contain two consecutive vertices of the polygon

Question 6

Theorem 11.7: Area of a Regular Polygon Thm.

Answer 6

the area of a regular polygon is one-half of the product of the apothem (a) and the perimeter (P), or A = 1/2aP