One of these shapes named after Cyril Perry is defined using two isodynamic points and a third point.
One of these shapes named after Cyril Perry is defined using two isodynamic points and a third point. The Darboux product is defined for these objects and is proportional to the cosine of the angle of intersection. The power of a point theorem relates the distance of a point to one of these things using the formula AP times AQ. The midpoint of each side of a triangle, the foot of each altitude, and the (*) midpoint of each line segment stretching from the vertex to the orthocenter are the nine points used to define one of these shapes. The classic problem of "squaring" this shape was shown to be impossible when pi was proven to be transcendental. Zero eccentricity characterizes, for 10 points, what conic section with one focus, unlike an ellipse?
One of these shapes named after Cyril Perry is defined using two isodynamic points and a third point.
circles