
Cossos geomètrics
Authored by Blanca Tena
Mathematics
8th Grade
Used 1+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Els cossos geomètrics es classifiquen en _________ i _________
Poliedres i cossos de revolució
Prismes i poliedres
Prismes i cossos de revolució
Poliedres i Piràmides
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Classifica el següent poliedre en funció de la seva base
Con hexagonal regular
Piràmide pentagonal irregular
Prisma hexagonal regular
Piràmide hexagonal regular
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Classifica el següent poliedre en funció de la seva base
Prisma quadrangular regular
Poliedre regular quadrangular
Prisma quadrangular irregular
Piràmide quadrangular irregular
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Classifica el següent poliedre en funció de la seva base
Prisma hexagonal regular
Prisma pentagonal irregular
Prisma hexagonal irregular
Tronc de piràmide pentagonal irregular
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La relació d'Euler ens relaciona les cares, vèrtex i arestes de qualsevol poliedre convex de forma que
Cares - Vèrtex + Arestes =2
Cares + Vèrtex - Arestes = 2
Cares - Vèrtex - Arestes = 2
Cares + Vèrtex + Arestes = 2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Com puc calcular l'àrea de qualsevol poligon regular?
No es pot fer ja que no existeix una forma general per a qualsevol figura.
Es parteix la figura des del centre fins al mig de les arestes creant figures iguals. Es calcula l'àrea d'una de les figures més petites i es multiplica pel nombre de vegades que surt.
Es parteix la figura des del centre fins als vèrtex creant triangles iguals. Es calcula l'àrea d'una d'un dels triangles i es multiplica pel nombre de vegades que surt.
Es pot calcular només l'àrea del triangle equilater i del quadrat ja que ens sabem la fòrmula.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quina és la fòrmula de l'àrea del cercle?
π*r^2
π*r
2*π*r
4*π*r^2
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