4 collinear points, 3 circles, computational
Source: IV Soros Olympiad 1997-98 Corr. 11.7 https://artofproblemsolving.com/community/c2416727_soros_olympiad_in_mathematics
June 1, 2024
geometrycircles
Problem Statement
On straight line there are points , , and , following in the indicated order: , , . Segments and serve as chords of two circles, and the sum of the angular values of the arcs of these circles located on one side of is equal to . A third circle passes through and , intersecting the first two at points and . The straight line intersects at point . Find .