
Exercício 1-3ºF
Authored by Albanira Sena
Mathematics
12th Grade
Used 23+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Sabe-se que o ponto P(a,2) é equidistante dos pontos A(3,1) e B(2,4). Calcule a abscissa a do ponto P.
a = -1
a = 1
a = 0
a = 2
a = - 2
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dados A(-3,-5) e B(1,-1), determine o ponto C(xc,yc) que divide o segmento orientado na razão
xc = 4 e yc = -2
xc = - 4 e yc = 2
xc = 4 e yc = 2
xc = 2 e yc = 4
xc = - 2 e yc = - 4
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Se A(1,3), B(-3,-5) e C(-2,2) formam um triângulo ABC, determine as coordenadas dos vértices do triângulo formado pelos pontos médios dos lados . , e
= (-1,-1); =
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Seja ABC um triângulo. Determine sua área, se as coordenadas dos vértices são A(2,1), B(3,2) e C(-2,5).
4
8
2
-4
-8
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Determine a área do triângulo formado pelos pontos médios do triângulo ABC, com A(1,7), B(3,5) e C(-3,-3).
2
7
0
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Leia os itens a seguir e faça o que se pede.
a) Determine M, ponto médio de , nos seguintes casos:
· A(3,-2) e B(-1,-6);
· A e B(-1, ) ;
· A(0,7) e B(6,0).
(1, -4) ;
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Leia os itens a seguir e faça o que se pede.
b) Uma das extremidades de um segmento é o ponto A(7,13) e a outra é o ponto B(x,y). Sendo M(-3,24) o ponto médio, determine as coordenadas da extremidade B do segmento.
(13,35)
(13,-35)
(-13,35)
(-13,-35)
(35, - 15)
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