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MathNet 2019-part-04 — 184 problems (EN–VI) Question 96

Math Olympiad Vault · MathNet 2019-part-04 — 184 problems (EN–VI)

Question 96

In a square $ABCD$ of side length $2$ we draw lines from each vertex to the midpoints of the two opposite sides. For example, we connect $A$ to the midpoint of $BC$ and to the midpoint of $CD$. The eight resulting lines together bound an octagon inside the square (see figure). What is the area of this octagon?

Question illustration