Incircle of a triangle

Topic:Angles, Circle, Incircle or Inscribed Circle

Incircle of a triangle using the intersection of the three angle bisectors. The angle bisectors are the red lines. You can move the vertices to see what happens.

New Resources

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Proving Triangles Similar by Dilation
Identify Opposite, Adjacent, Hypotenuse
Proving Triangles Similar: Multistep Transformations
Tangent Plane to a Sphere

Discover Resources

Chapter 8
Geometry Project
golden ratio spiral
Red Piece JA

Discover Topics

Rectangle
Percentages
Quadrilaterals
Functions
Arithmetic Operations