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| New! | An invitation to practice origami | map | Practical work Geometric constructions |
| Back MOOC1 | Journey 3 | Sequence 1 | <--- page 7 | page 1 | page 2---> |
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First geometric constructions |
| One of the magical aspects of paper folding is the ability to make geometric constructions without using the ruler or the compass. Among the first constructions, folding along a parallel to a given direction, or perpendicular to one side, or even bisecting an angle are in common use. Download the document « Constructions géométriques ». It gives indications for the following operations: - create a fold passing through a given point and perpendicular to an edge of the sheet, - create a fold passing through a given point and perpendicular to an existing fold, - create a fold passing through a given point, parallel to an existing fold, - create a fold drawing the bisector of an angle, - create a fold dividing a right angle at a 60 ° angle and a 30 ° angle. Take one or more sheets of paper, and practice doing these things. Look for the precision of the folds. Try to combine these folds to make more complex figures: a right triangle, an equilateral triangle, a rectangle trapezoid, ... |
1 document(s) to download
| mlconstrgeo1.pdf | Constructions géométriques, 1 page |