Linked from

The 15 pages that link to Incircle, each with the reason it gives.

• CircumcircleCompared with: Unlike the circumcircle, it touches the sides rather than passing through the vertices.

• IncenterRelated: The incenter is the center of the circle tangent to all three sides.

• OrthocenterRelated: Its center, the incenter, offers a useful comparison with the orthocenter.

• Angle bisectorRelated: The incenter locates the circle equally tangent to all three triangle sides.

• SemiperimeterRelated: For a triangle, its radius and semiperimeter determine the area.

• Nine-point circleRelated: Feuerbach’s theorem states that it is tangent internally to the nine-point circle.

• Euler's inequalityBroader topic: Its radius supplies the other quantity in the inequality.

• Feuerbach's theoremRelated: Feuerbach's theorem identifies its tangency with the nine-point circle.

• Pitot theoremRelated: Its contact points divide the sides into equal tangent segments at each vertex.

• Conway circle theoremRelated: Its three tangency points supply half of the six points in the theorem.

• Equal Incircles TheoremNarrower topic: The theorem compares the radii of these circles in two triangles.

• Incenter–excenter lemmaRelated: Its radius supplies the incenter’s distance to each side.

• Japanese theoremRelated: Its radius is the inradius being summed in the theorem.

• Japanese theorem for cyclic polygonsRelated: The inradius is the radius of the triangle’s incircle.

• Reuschle's theoremRelated: It is one of the classical circles used in triangle-center relations.