Point A lies outside circle o of center O. From point A draw two lines tangent to a circle o in points B and C. A tangent to a circle o cuts segments AB and AC in points E and F, respectively. Lines OE and OF cut segment BC in points P and Q, respectively. Prove that from line segments BP, PQ, QC can construct triangle similar to triangle AEF. geometryPolandTriangleconstructionsimilar triangles