28 Le triangle DEF est une réduction dans le
rapport k du triangle ABC.
E
С
F.
1,2 cm
100°
2,1 cm
B
A
2,8 cm
D
1. a. Calculer le rapport k de réduction.
b. Calculer la longueur du segment [EF].
c. Donner la mesure de l'angle DEF.
2. Le triangle ABC est un agrandissement de rapport
k'du triangle DEF. Donner la valeur exacte de k'.
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Answer from: Quest
Iagree that is the answer to the question
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Number 5 is 50 degreesnumber 6 is 45 degreesnumber 7 is 60 degreesnumber 8 is 45 degrees
Answer from: Quest
-12 > a
step-by-step explanation:
-11 > 1 + a
subtract 1 from each side
-11 -1> 1 -1+ a
-12 > a
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