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Rotation de figures à 3 sommets (A)

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(1)

Rotations (A)

Dessinez l’image de la rotation d´ecrite.

0

Rotation dans le sens antihoraire de 90

◦

autour

du point (5, 2).

-

x

6

y

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa@aa@a@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

Rotation de 180

◦

autour du point (-5, 1).

-

x

6

y

H H H H H H H H H H H H H H H H H H H H H H H H H H H H H             

Rotation dans le sens horaire de 90

◦

autour du

point (-5, -2).

-

x

6

y

                                     T T T T T T T T T T T T T T T T T T T T T 

Rotation dans le sens horaire de 90

◦

autour du

point (0, 5).

-

x

6

y

SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS S X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

MathsLibres.com

(2)

Rotations (A) Solutions

Dessinez l’image de la rotation d´ecrite.

0

Rotation dans le sens antihoraire de 90

◦

autour

du point (5, 2).

-

x

6

y

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa@aa@a@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @@ @@ @@ @@ @@ @@ @ x

Rotation de 180

◦

autour du point (-5, 1).

-

x

6

y

H H H H H H H H H H H H H H H H H H H H H H H H H H H H H              HHHHHHHHHHHHHHHHHHHHHHHHHHHHH     x

Rotation dans le sens horaire de 90

◦

autour du

point (-5, -2).

-

x

6

y

                                     T T T T T T T T T T T T T T T T T T T T T  b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b """"""""""""""""""""" AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA A x

Rotation dans le sens horaire de 90

◦

autour du

point (0, 5).

-

x

6

y

SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS S X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X                                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaa            x

MathsLibres.com

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