# MathsClass

A blog about teaching and learning in a maths classroom.

## GeoGebra

Also see my profile on GeoGebraTube.

Angles on opposite sides of a common arm are called adjacent angles.

### Alternate Angles

Alternate angles on parallel lines.

### Angles

Display angles from 10° to 90° in 5° increments.

### Angles at a point

Angles at a point add up to 360°.
Revolution equals 360°.

### Angles in a Right Angle

Angles in a Right Angle add up to 90°.

### Angles on a Straight Line

Angles on a Straight Line add up to 180°.

### Cointerior Angles

Cointerior angles on parallel lines.

### Corresponding Angles

Corresponding angles on parallel lines.

### Parts of a Circle

Investigate the parts of a circle. Turn on/off parts of the circle. Move some points to see how a part can look different.

### Understanding absolute value

An applet to consider the absolute value of an algebraic expression.

### Vertically Opposite Angles

Vertically opposite angles are equal.

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The posts and comments I make on this blog are made in a private capacity and do not represent the official view of my employer.