MathDB
Geometry - simple

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October 4, 2005
geometrygeometric transformationpower of a point

Problem Statement

Two circles C1C_1 and C2C_2 intersect at two distinct points P,QP, Q in a plane. Let a line passing through PP meet the circles C1C_1 and C2C_2 in AA and BB respectively. Let YY be the midpoint of ABAB and let QYQY meet the cirlces C1C_1 and C2C_2 in XX and ZZ respectively. Show that YY is also the midpoint of XZXZ.