Book cover for Discovering Geometry an Investigative Approach

Discovering Geometry an Investigative Approach

Michael Serra

ISBN #9781559538824

4th Edition

2,157 Questions

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48,436 Students Helped

Homework Questions

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Summary

Learning Objectives

Key Concepts

Example Problems

Explanations

Common Mistakes

Summary

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Learning Objectives

Key Concepts

CONCEPT

DEFINITION

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Example Problems

Example 1

Look at the rectangle at right. Find the ratio of the shaded area to the area of the whole figure. Find the ratio of the shaded area to the unshaded area. (IMAGE CAN'T COPY)

Example 2

Use the figure below to find these ratios: $\frac{A C}{C D}, \frac{C D}{B D},$ and $\frac{B D}{B C}$

Example 3

Consider these right triangles. (IMAGE CAN'T COPY) a. Find the ratio of the perimeter of $\triangle R S H$ to the perimeter of $\triangle M F L$ b. Find the ratio of the area of $\triangle R S H$ to the area of $\triangle M F L$

Example 4

In Exercises $4-12,$ solve the proportion. $\frac{7}{21}=\frac{a}{18}$

Example 5

In Exercises $4-12,$ solve the proportion. $\frac{10}{b}=\frac{15}{24}$

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Step-by-Step Explanations

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Common Mistakes