# CHAPTER 2 REVIEW EXERCISES

# CONCEPT CHECK EXERCISES

Determine each of the following as being either **true** or **false**. If it is false, explain why.

In Fig. 2.6, $\hspace{0.17em}\angle \hspace{0.17em}AOC$ is the complement of $\hspace{0.17em}\angle \hspace{0.17em}COB\hspace{0.17em}.\hspace{0.17em}$

A triangle of sides 9, 12, 15 is a right triangle.

A quadrilateral with two sides of length

`a`two sides of length`b`is always a parallelogram.The circumference of a circle of diameter

`d`is $\pi d\hspace{0.17em}.\hspace{0.17em}$Simpson’s rule could be used to find the approximate area in Example 2 of Section 2.5.

The volume of a right circular cylinder is the base area times the height.

# PRACTICE APPLICATIONS

In Exercises 7–10, use Fig. 2.131. Determine the indicated angles.

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