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UKMT Junior Mathematical Challenge, 2021

Geometry Difficulty 3.0 AMC 10/12 Find the answer United Kingdom

The diagram shows a rhombus formed by joining each vertex of a square to the midpoint of a side of the square. What fraction of the area of the square has been shaded?

(A) $\frac{1}{2}$ (B) $\frac{1}{3}$ (C) $\frac{1}{4}$ (D) $\frac{1}{6}$ (E) $\frac{1}{8}$

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