Images for Mathematics
objects of the exhibition (520)
images from the exhibition (194)
problems from the exhibition (86)
exhibition in Milan (89)
external layouts (231)
Simetria, jogos de espelhos in Porto (43)
the visitors (30)

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The kaleidoscope effect

If we put any object between two incident mirrors at angle that divides 180° (30° in the...

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Planes of symmetry of a cube

A cube has nine symmetry planes: three planes which are parallel to a couple of opposite ...

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Heron's problem

Which is the shortest way from a point A to another point B (A and B are on the same semip...

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Volume and similitude

The kaleidoscope of the cube can be used to visualize the fact that, by doubling the edge ...

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Playing with the alphabet

A letter without symmetries. A rotation of 180° sends the letter in itself.

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Playing with the alphabet

A letter with horizontal symmetry (parallel to the direction of writing). Exhibit of Simme...

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Playing with the alphabet

A letter with vertical symmetry (perpendicular to the direction of writing). Exhibit of Si...

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Inside a mirror box with a...

Mirror tricks in a box with angles 30°, 60°, 90°; you get a pattern with a symmetry of ...

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Inside a mirror box with a...

A paving, reproduced in a triangular mirror box with angles 90°, 45°, 45° with these ti...

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Word games

A word with an axis of symmetry perpendicular to the direction of writing.

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objects of the exhibition

one mirror (77)two mirrors (80)three or more mirrors: the plane mirror boxes (117)three mirrors: the 3d kaleidoscope (139)other objects (110)

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Matematita