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Sagot :

Bonjour,

Calcul de AT: th de Thalès, on a:

AT/AM= AR/AL

AT/3.2= 4.2/2.4

2.4 AT= 3.2x4.2

AT= 13.44/2.4

AT= 5.6 cm.

Calcul de ML:

ML/RT= AM/AT

ML/7= 3.2/5.6

5.6 ML= 7x3.2

ML= 22.4/5.6

ML= 4 cm.

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