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4

Part of 2019 Novosibirsk Oral Olympiad in Geometry

Problems(1)

collinear, 2 squares and isosceles (2019 Novosibirsk Oral Geo Oly 7.4)

Source:

4/26/2021
Two squares and an isosceles triangle are positioned as shown in the figure (the up left vertex of the large square lies on the side of the triangle). Prove that points A,BA, B and CC are collinear. https://cdn.artofproblemsolving.com/attachments/d/c/03515e40f74ced1f8243c11b3e610ef92137ac.png
geometrySquaresisoscelescollinear