1. Prerequisite Skills
VOCABULARY CHECK
1. Copy and complete: The area of a regular polygon
is given by the formula A = ? .
ANSWER
A = a P, where a is the apothem and P is the perimeter, 1 2
A = a ns, where n is the number of sides and s is the side length or

2. Prerequisite Skills
VOCABULARY CHECK
2. Explain what it means for two polygons to
be similar.
ANSWER
Two polygons are similar if corresponding angles are congruent and corresponding side lengths are
proportional.

3. Prerequisite Skills
SKILLS AND ALGEBRA CHECK
Use trigonometry to find the value of x. 3.
ANSWER
About 14.0

4. Prerequisite Skills
SKILLS AND ALGEBRA CHECK 4.
ANSWER
About 14.6

5. Prerequisite Skills
SKILLS AND ALGEBRA CHECK 5.
ANSWER
About 23.0

6. Prerequisite Skills
SKILLS AND ALGEBRA CHECK
Find the circumference and area of the circle with
the given dimension.
6. r = 2 m
ANSWER
12.6 m, 12.6 m2
7. d = 3 in.
ANSWER
9.42 in., 7.07 in.2

7. Prerequisite Skills
SKILLS AND ALGEBRA CHECK
8. r = 2 √5 cm
ANSWER
28.1 cm, 62.8 cm2