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The figure below shows an acute triangle ABC with circumcenter O, orthocenter H and altitude BD. If the circumradius is R and OH = d, prove that d^{2} = R^{2} - 2.BH.HD

Home | Search | Geometry | Problems | All Problems | Open Problems | Visual Index | 10 Problems | 971-980 | Triangles | Circumcenter | Circles | Orthocenter | Altitude | Email | Solution / comment | By Antonio Gutierrez