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Inradius

The inradius of a regular polygon is the radius of the incircle, which is the largest circle that will fit inside the polygon.

In the applet below, the blue line from the center is the inradius of the polygon. For more on the incircle of the polygon, see Incircle of a regular polygon.

Pages referring to 'inradius'

The incircle of a regular polygon is defined along with its radius and formula for finding it.
Definition and properties of the incircle of a triangle