Full angle
Definition: An angle whose measure is exactly 360°. A full circle.
Try this Adjust the angle below by dragging an orange dot and see how the angle ABC behaves. Note that it is a full angle only when it is exactly 360°

Not widely used. If you continue to increase an angle it will eventually 'double back' on itself and form a full 360° angle. This is the Full Angle. One could argue that this is the same as a zero-sized angle. But we generally mean the reflex angle and so it is a full circle or 360°. Adjust the angle above and try to create the full angle going around in both directions.

Types of angle

Altogether, there are six types of angle as listed below. Click on an image for a full description of that type and a corresponding interactive applet.

Acute angle Right Angle Obtuse Angle
Acute angle
Less than 90°
Right angle
Exactly 90°
Obtuse angle
Between 90° and 180°
Straight Angle Reflex Angle Full Angle
Straight angle
Exactly 180°
Reflex angle
Between 180° and 360°
Full angle
Exactly 360°

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Other angle topics


Angle Types

Angle relationships