Chapter Eight:  
Similarity

Geometry   Notes

Chapter  8

Section  8.1
Section  8.2
Section  8.3
Section  8.4
Section  8.5
Section  8.6

Geometry Contents

 

Take notes on the following topics.

Section 8-1  Ratios and Proportions

Vocabulary

Proportion (p. 417) A proportion is a statement that two ratios are equal. An extended proportion is a statement that three or more ratios are equal.

Cross-Product Property (p. 417) The product of the extremes of a proportion is equal to the product of the means.

Scale drawing (p. 418) A scale drawing is a drawing in which all lengths are proportional to corresponding actual lengths.

Scale (p. 418) A scale is the ratio of any length in a scale drawing to the corresponding actual length. The lengths may be in different units.