<< - Page 1 2 3 4 5 6 7 8 9 10 11 - >>
If we put any object between two incident mirrors at angle that divides 180° (30° in the...
A cube has nine symmetry planes: three planes which are parallel to a couple of opposite ...
Which is the shortest way from a point A to another point B (A and B are on the same semip...
The kaleidoscope of the cube can be used to visualize the fact that, by doubling the edge ...
A letter without symmetries. A rotation of 180° sends the letter in itself.
A letter with horizontal symmetry (parallel to the direction of writing). Exhibit of Simme...
A letter with vertical symmetry (perpendicular to the direction of writing). Exhibit of Si...
Mirror tricks in a box with angles 30°, 60°, 90°; you get a pattern with a symmetry of ...
A paving, reproduced in a triangular mirror box with angles 90°, 45°, 45° with these ti...
A word with an axis of symmetry perpendicular to the direction of writing.
