# Category:Internal Angles

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This category contains results about **Internal Angles**.

Definitions specific to this category can be found in Definitions/Internal Angles.

The **internal angle** of a vertex of a polygon is the size of the angle between the sides adjacent to that vertex, as measured *inside* the polygon.

## Pages in category "Internal Angles"

The following 3 pages are in this category, out of 3 total.