A triangle with an inscribed rectangle. What is the maximum red fraction?
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The Bermuda Triangle
Tag: area
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The mouse and the elephant
Two squares and a semicircle of diameter 4. What is the total square area?
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The green flag
A square of side length 2 shares a vertex with another square that is elongated to form a green rectangle. What is the rectangle area?
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Ray of light
A triangle with an inscribed triangle with a parallel side. What fraction is yellow?
Two equilateral triangles and a quarter circle that goes through both apexes. If the smaller triangle has area 1, what is the total shaded area?
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Up and down
A semicircle and a square. Three secants and a tangent form two triangles. What is their area proportion?
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The egg basket
A regular hexagon with a diagonal and a line segment connecting a vertex to a point on the other side. The two triangle areas are given. What is the hexagon’s area?
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Pandora’s box
A square containing five other squares. What fraction is coloured?
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Another brick
A rectangle and a quarter circle. What is the area of the rectangle?
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The Common Snowdrop
A square contains a smaller square. Their vertices are cyclically connected as shown, forming four triangles. What is the minimal green area fraction?