# Congruence and Similarity

Learn and practice identifying similar and congruent figures with interactive resources from GeoGebra.

## Middle School

GRADES 6-8

### Angles Formed by Parallel Lines

Identify the congruent and supplementary relationships of the angles formed by cutting parallel lines by a transversal.

Exploration

GR. 6-8

#### Corresponding Angles Formed By Parallel Lines and a Transversal

Exploration

GR. 6-8

#### Vertical Angles Formed by Parallel Lines and a Transversal

Exploration

GR. 6-8

#### Alternate Angles Formed by Parallel Lines and a Transversal

Exploration

GR. 6-8

#### Supplementary Angles Formed by Parallel Lines and a Transversal

Practice

GR. 6-8

#### Determining Measures of Angles Formed by Parallel Lines and a Transversal

### Corresponding Parts of Similar Figures

Use proportions to express relationships between corresponding parts of similar figures.

### Identifying Similar Figures Using Measurement

Identify proportional parts of similar figures using rulers and protractors.

### Similar Polygons

Use proportional reasoning to solve problems related to similar polygons.

### Similarity and Congruence

Identify corresponding parts of similar and congruent figures.

### Related Topics

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