Two concentric congruent squares and two red rectangles. What fraction of the total area is red?
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Star and stripes
Tag: square
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Letting go
Two squares share a vertex. Three other vertices are collinear. What is the area proportion of the blue to the red square?
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Orange above
A square contains a right triangle. What fraction is orange?
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Four to twelve
A regular dodecagon and a square share two vertices. What is the area proportion square : dodecagon?
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The mahogany triangle
A square contains an isosceles triangle with an extended altitude. What fraction is mahogany?
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Eight corners
A regular octagon with two diagonals and two squares. What’s the area proportion of the blue to the red square?
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The oppressed minority
A square with two inscribed squares. What is the maximal proportion green : blue?
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Easing it down
Three squares share three vertices. What’s the angle α?
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Pointing upwards
A square containing two equilateral triangles. What’s the proportion blue : orange?
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Five to twelve
A square and a rectangle share two vertices. If the square has twice the area of the rectangle, what’s the angle α?