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Triangle Incircle Calculator: Radius, Area, and Ratio The Triangle Incircle Calculator is a tool that allows you to determine the properties of the incircle of a triangle based on its side lengths. By entering the lengths of the three sides, this calculator calculates the radius and area of the incircle, which is the largest circle that can fit inside the triangle. |

Regular Polygon Incircle and Circumcircle Calculator This page presents two online calculators: the Incircle of a regular polygon calculator and the circumcircle of a regular polygon calculator. |

Regular polygon, number of sides and length of side from incircle and circumcircle radii This online calculator finds number of sides and length of side of regular polygon given the radii of incircle and circumcircle |