POTW #6 - Feb. 4, 2024

Contributed by: devourer

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Difficulty: 6

This problem is tagged with potw, potw2024, devourer.

MCR Problem of the Week, Feb. 5, 2024 Edition

Quadrilateral $ABCD$ has $AB=BC=CD$. Angle $ABC$ is $168$ degrees and angle $BCD$ is $108$ degrees. Find angle $CDA$. Your answer should be a single number, without any units.

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