
Rotasi Geometri
Authored by Iskawati Marpaung
Mathematics
11th Grade
Used 15+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebuah garis lurus dengan persamaan y = 2x + 3 dirotasi sejauh 90 derajat berlawanan arah jarum jam. Persamaan garis hasil rotasi adalah...
2x +y -3 = 0
2x - y + 3 = 0
x + 3y - 2 = 0
x +2y +3 = 0
x -2y + 4 = 0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rudi sedang menggambar titik P(4,2) di atas kertas. Bayangkan jika Rudi adalah karakter dalam kartun yang sedang berlatih menggambar dan titik P tersebut diputar 90 derajat berlawanan arah jarum jam di sekitar titik O(0,0). Apa koordinat baru titik P yang akan ditemukan Nisa?
(2, -4)
(-2, 4)
(4, -2)
(-4, 2)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nita dan Rudi sedang bermain sebuah permainan seru di mana mereka perlu memutar karakter kartun di peta. Jika Nita mulai dengan titik Q(3,4) dan memutarnya 270 derajat searah jarum jam di sekitar titik asal O(0,0), apa posisi baru dari karakter kartun tersebut?
(-4,3)
(4,-3)
(3,4)
(-3,-4)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu hari, Lina, Rizal, dan Rina sedang menggambar di papan tulis. Dalam kartun yang mereka buat, ada karakter yang ingin memindahkan titik R(5,5) ke posisi R'(5,-5) dalam sistem koordinat. Ayo bantu Lina! Tentukan rotasi yang diperlukan untuk memindahkan titik tersebut.
Rotasi 180 derajat di sekitar sumbu Y
Rotasi 180 derajat di sekitar sumbu X
Rotasi 270 derajat di sekitar sumbu X
Rotasi 90 derajat di sekitar sumbu Y
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bayangan titik P (a,b) oleh rotasi terhadap titik pusat (0,0) sebesar -90o adalah p' (-10,-2) nilai a + 2b =…
-18
-8
8
18
22
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bayangan garis y = 5x + 4 oleh rotasi R(O, -90) adalah…
x - 5y - 4 = 0
x + 5y - 4 = 0
x + 5y + 4 = 0
x - 5y + 4 = 0
-x -5y - 4 = 0
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Persamaan garis 2x + y + 3 = 0 dirotasikan dengan pusat (0,0) sebesar 90o, maka persamaan bayangannya adalah…
2x-y-3 = 0
x + 2y -3 = 0
x - 2y + 3 = 0
2x + y + 3 =0
x - 2y - 3 = 0
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