Geometri Transformasi

Geometri Transformasi

9th Grade

10 Qs

quiz-placeholder

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Geometri Transformasi

Geometri Transformasi

Assessment

Quiz

Mathematics

9th Grade

Hard

Created by

M.Najmul Ula

Used 3+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 10 pts

Titik (3,2) dicerminkan terhadap sumbu x, maka koordinat bayangan titik A adalah.....

(3, -2)

(-3, -2)

(-3, 2)

(3, 2)

Answer explanation

A (x,y) -> A' (x,-y)

A (3,2) -> A' (3,-2)

2.

MULTIPLE CHOICE QUESTION

45 sec • 10 pts

Bayangan dari Titik A (-2,3) dirotasikan sebesar 90 derajat berlawanan arah jarum jam adalah....

(2, -3)

(-3, -2)

(3, 2)

(-3, 2)

Answer explanation

Rotasi dengan pusat O (0, 0) sebesar 90 derajat

P (x,y) ----> P' (-y, k)

A (-2,3) ----> A' (-3, -2)

3.

MULTIPLE CHOICE QUESTION

45 sec • 10 pts

Titik P (2,-4) adalah bayangan titik P (3,5) oleh translasi T. Translasi T= .....

(-1, -9)

(-1, 9)

(1, -9)

(1, 9)

Answer explanation

P (x, y) ----> P' (x+a, y+b)

P (3, 5) ----> P' (2, -4)

x = 3 ; y = 5

x+a = 2

y+b = -4

a = 2-x

a = 2-3

a = -1

b = -4-y

b = -4-5

b = -9

4.

MULTIPLE CHOICE QUESTION

45 sec • 10 pts

Koordinat titik K (2,-4) dicerminkan terhadap garis Y =x, maka koordinat dari bayangan yang terbentuk adalah....

(-4, -2)

(4, -2)

(-2, 4)

(-4, 2)

Answer explanation

Pencerminan terhadap garis y = x

P (x, y) ----> P' (y, x)

K (2, -4) ----> K' (-4, 2)

5.

MULTIPLE CHOICE QUESTION

45 sec • 10 pts

Koordinat bayangan segman garis AB,dengan A(2,2) dan B(4,-2) oleh dilatasi dengan faktor dilatasi k=3 dan pusat dilatasi O adalah....

A (2,-2) dan

B (6,6)

A (6,6) dan

B (12,-6)

A (4,-2) dan

B (12,6)

A (12,6) dan

B (12,7)

Answer explanation

(x, y) ----> (xk, yk)

A (2, 2) ----> (2.3, 2.3) = (6, 6)

B (4, -2) ----> (4.3, (-2).3) = (12, -6)

A' = (6, 6)

B' = (12, -6)

6.

MULTIPLE CHOICE QUESTION

45 sec • 10 pts

Bayangan titik C (-3, 5) dan D (5, 4) yang ditranslasikan oleh T = [3, -2] adalah ....

C' (0,3) dan

D' (8,2)

C' (9,10) dan

D' (15,8)

C' (0,-3) dan

D' (-8,2)

C' (10,9) dan

D' (8,15)

Answer explanation

Rumus :

(x, y) [oleh T (a, b)] ----> (x+a, y+b)

C (-3, 5) [oleh T (3, -2)] ----> (-3+3, 5+(-2)) = (0,3)

C' = (0,3)

D (5, 4) [oleh T (3, -2)] ----> (5+3, 4+(-2)) = (8, 2)

D' = (8, 2)

7.

MULTIPLE CHOICE QUESTION

45 sec • 10 pts

Bayangan titik A oleh refleksi terhadap titik (1,-2) adalah A’ (3,5). koordinat titik A adalah.....

A’ (1, 9)

A’ (-1, -9)

A’ (-9, 1)

A’ (9, 1)

Answer explanation

(x, y) terhadap (a, b) = (2a-x, 2b-y)

A (x, y) terhadap (1, -2) oleh A' (3, 5)

A [2.1-x, 2(-2)-y] = A' (3, 5)

2-x = 3

x = -1

-4-y = 5

y = -9

Jadi, A (-1, -9)

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