# Angle

## Video lessons without Words

Thanks to Rex Boggs, Rockhampton Grammar School, Australia
(http://bit.ly/rexboggs) for help with the English translation.

### Duplicating an Angle (Copying an Angle)

For a given angle, how do you construct an angle with the same measure using just a straightedge and compass (without a protractor)?
Find the answer in this video.
Duplicating (copying) angles on paper.

### Bisecting an Angle

The angle bisector is a line passing through the vertex of the angle that cuts it into two equal smaller angles.
How to construct the angle bisector (by using just a straightedge and compass, without a protractor)?
Find the answer in this video.
Construction on paper.

### Constructing an Angle of 60 degrees

How to construct an angle of 60° (using just a straightedge and compass, without a protractor)?
Find the answer in this video.
Construction on paper.

### Constructing an Angle of 30 degrees

How to construct an angle of 30° (using just a straightedge and compass, without a protractor)?
Find the answer in this video.
Construction on paper.

### Constructing an Angle of 120 degrees

How to construct an angle of 120° (using just a straightedge and compass, without a protractor)?
Find the answer in this video.
Construction on paper.

### Constructing an Angle of 90 degrees

How to construct an angle of 90° (using just a straightedge and compass, without a protractor)?
Find the answer in this video.
Construction on paper.

### Constructing an Angle of 45 degrees

How to construct an angle of 45° (using just a straightedge and compass, without a protractor)?
Find the answer in this video.
Construction on paper.

### Constructing an Angle of 75 degrees

How to construct an angle of 75° (using just a straightedge and compass, without a protractor)?
Find the answer in this video.
Construction on paper.

 Webmajstori Thanks to the members of the Webmajstori forum for help with making design of these webpages. Antonija Horvatek Autor of the website