Figures semblables et homothétie 2E

Quiz
•
Mathematics
•
6th - 7th Grade
•
Hard
Marie-Soleil Anber
Used 232+ times
FREE Resource
44 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vrai ou faux.
k = mesure du segment initial ÷ mesure du segment image
VRAI
FAUX
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dans une homothétie, si k = 3,8, la figure image sera... ?
...identique à la figure initiale.
...plus petite que la figure initiale.
...plus grande que la figure initiale.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dans une homothétie de centre O, si la , et
2
1/5
1/2
50
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Voici le triangle EFG, l'image du triangle ABC. Trouve le rapport des périmètres de ces deux figures.
k = 1/2
k2 = 1/4
k = 2
k2 = 4
Impossible à trouver, car il manque des mesures.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Trouve le rapport des aires de deux figures semblables ayant un rapport de similitude égale à 3.
k = 3
k2 = 6
k2 = 9
k2 =1,5
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Deux figures semblables ont respectivement des aires de 32 cm2 et de 51,2 cm2. Trouve le rapport des aires qui les associe si on considère la situation comme une réduction de la figure initiale.
k2 = 0,8
k2 = 0,625
k2 = 1,6
k2 = 19,2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le rapport de similitude entre deux losanges est de 16. Trouve le rapport des aires entre ces deux figures.
k = 32
k2 = 16
k2 = 8
k = 4
k2 = 256
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