Symétrie axiale - 6e

Symétrie axiale

Exercice 1 : Tracer les symétriques de points

Construire les symétriques des points A, B, C et D par rapport à l'axe \((d)\).

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Exercice 2 : Tracer le symétrique d'un triangle par symétrie axiale

Tracer le symétrique du triangle ABC par rapport à l'axe.

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Exercice 3 : Tracer les axes de symétrie d'une figure simple

Tracer le ou les axes de symétrie de la figure suivante.

Exercice 4 : Trouver les phrases justes dans une situation de symétrie axiale

Voici une figure

Parmi les phrases suivantes, lesquelles sont correctes ?

1. B est le symétrique de A par rapport à l'axe (d)
2. A et B sont symétriques par rapport à (d)
3. A et B sont les symétries par rapport à la droite (d)
4. A est le symétrique de B par rapport à la droite (d)

Exercice 5 : Trouver les situations de symétrie axiale - Rectangles

Parmi les figures suivantes, lesquelles correspondent à une situation de symétrie axiale. A', B', C' et D' sont les symétriques de A, B, C et D respectivement par rapport à l'axe.

A.

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B.

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C.

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D.

{"init": {"range": [[-7.0, 7.0], [-7.0, 7.0]], "scale": [40, 40]}, "line": [[[-6.0, -6.0], [6.0, -6.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, -5.0], [6.0, -5.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, -4.0], [6.0, -4.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, -3.0], [6.0, -3.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, -2.0], [6.0, -2.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, -1.0], [6.0, -1.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, 0.0], [6.0, 0.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, 1.0], [6.0, 1.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, 2.0], [6.0, 2.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, 3.0], [6.0, 3.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, 4.0], [6.0, 4.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, 5.0], [6.0, 5.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, 6.0], [6.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[-6.0, -6.0], [-6.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[-5.0, -6.0], [-5.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[-4.0, -6.0], [-4.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[-3.0, -6.0], [-3.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[-2.0, -6.0], [-2.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[-1.0, -6.0], [-1.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[0.0, -6.0], [0.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[1.0, -6.0], [1.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[2.0, -6.0], [2.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[3.0, -6.0], [3.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[4.0, -6.0], [4.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[5.0, -6.0], [5.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[6.0, -6.0], [6.0, 6.0], {"subtype": "segment", "stroke": "#ccc"}], [[0.0, 3.0], [4.0, 3.0], {"subtype": "segment"}], [[4.0, 3.0], [4.0, 1.0], {"subtype": "segment"}], [[4.0, 1.0], [0.0, 1.0], {"subtype": "segment"}], [[0.0, 3.0], [0.0, 1.0], {"subtype": "segment"}], [[0.0, -3.0], [4.0, -3.0], {"subtype": "segment"}], [[4.0, -3.0], [4.0, -1.0], {"subtype": "segment"}], [[4.0, -1.0], [0.0, -1.0], {"subtype": "segment"}], [[0.0, -3.0], [0.0, -1.0], {"subtype": "segment"}], [[-7.0, 0.0], [7.0, 0.0], {"subtype": "line"}]], "label": [[[0.0, 3.0], "A", "above left", {}], [[4.0, 3.0], "B", "above right", {}], [[4.0, 1.0], "C", "below right", {}], [[0.0, 1.0], "D", "below left", {}], [[0.0, -3.0], "A'", "below left", {}], [[4.0, -3.0], "B'", "below right", {}], [[4.0, -1.0], "C'", "above right", {}], [[0.0, -1.0], "D'", "above left", {}]]}

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