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# 7.9: Study Guide

Difficulty Level: At Grade Created by: CK-12

Keywords: Define, write theorems, and/or draw a diagram for each word below.

$1^{st}$ Section: Ratios & Proportions

Ratio

Proportion

Means

Extremes

Cross-Multiplication Theorem

Corollary

Corollary 7-1

Corollary 7-2

Corollary 7-3

Corollary 7-4

Corollary 7-5

Homework:

$2^{nd}$ Section: Similar Polygons

Similar Polygons

Scale Factor

Theorem 7-2

Homework:

$3^{rd}$ Section: Similarity by AA

AA Similarity Postulate

Indirect Measurement

Homework:

$4^{th}$ Section: Similarity by SSS and SAS

SSS Similarity Theorem

SAS Similarity Theorem

Homework:

$5^{th}$ Section: Proportionality Relationships

Triangle Proportionality Theorem

Triangle Proportionality Theorem Converse

Theorem 7-7

Theorem 7-8

Homework:

$6^{th}$ Section: Dilations

Dilation

Homework:

Extension: Self-Similarity

Self-Similar

Fractal

Homework:

8 , 9 , 10

Feb 22, 2012

Oct 28, 2015