A triangle with two line segments. What’s the angle α?
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Pac-Man pack
Four Pac-Men eat the corners of a square while four others stand guard. What fraction of the square is eaten?
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Le col bleu
A square with two line segments. What fraction is blue?
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Angle chasing galore
Two intersecting circles with a triangle connecting them. Show that the three red points are collinear.
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Yeah, right!
A regular pentagon with three line segments. What’s the angle α?
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Go Orange
A regular hexagon, two diagonals and an orange equilateral triangle. What’s blue : orange : red?
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Balloon lifting
Three small balloons are in congruent sheds awaiting lift off. The middle shed opens its side flaps. Show that its balloon can inflate, without rolling it, until it is tangent to the sides of the adjacent sheds.
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Night mountain
A rectangle containing three line segments. What fraction is blue?
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Pink parallels
A pink parallelogram with two extended sides. What’s α : β?
The red and green wedges subtend the same angle, there are two right angles, and the blue sides have the same length. What is the ratio of lengths of the green and red segments?