Incircle, Excircle, Altitude

Author:Steve Phelps

The center of incircle, tangent point of excircle, and midpoint of altitude are collinear. The center of excircle, tangent point of incircle, and midpoint of altitude are collinear.

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Rings of circles
Droste effect draft
What if the Exponent is an OUTPUT?
bearing HK
Shade a spheric triangle with "surface".

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Квадратичная функция
Sin, Tan, Cos graphs
Area of a Circle (Parallelogram)
Activity 7
slider 2

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Logic
Planes
Line Segment
Tangent Function
Perimeter