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..., '''Apollonius' problem''' is to construct [[circle]]s that are [[Tangent#Geometry|tangent]] to three given circles in a plane (Figure 1). [[Apollonius o ...] (a [[point (geometry)|point]]) or expanded to infinite radius (a [[line (geometry)|line]]). Viète's approach, which uses simpler limiting cases to solve more ...

'''General relativity''' or the '''general theory of relativity''' is the [[Geometry|geometric]] [[Theoretical physics|theory]] of [[gravitation]] published by ...those of classical physics, especially concerning the passage of time, the geometry of space, the motion of bodies in [[free fall]], and the propagation of [[l ...