UKMT Pink Kangaroo, 2020

Geometry Difficulty 2.0 Junior Find the answer United Kingdom

Two squares of different sizes are drawn inside an equilateral triangle. One side of one of these squares lies on one of the sides of the triangle as shown. What is the size of the angle marked by the question mark?

(A) $25^\circ$ (B) $30^\circ$ (C) $35^\circ$ (D) $45^\circ$ (E) $50^\circ$

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