A cyclic polygon is inscribed in a circle, and the circle is its circumscribed circle or circumcircle. The radius of the inscribed circle or sphere, if it exists, is the inradius or filling radius of a given outer figure.
An inscribed angle in geometry is the angle formed in the interior of a circle when two chords intersect on the circle. It can also be defined as the angle formed by two given points on a circle at a given point on the circle.
An inscribed polygon is one with all of its vertices on a circle. The circle is encircled by the polygon, and the polygon is encircled by the circle. (It's a polygon inside a circle) A circumscribed polygon is one with each side tangent to a circle.
A cyclic polygon is inscribed in a circle, and the circle is its circumscribed circle or circumcircle. The radius of the inscribed circle or sphere, if it exists, is the inradius or filling radius of a given outer figure.
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