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Transformations

Authored by Whitney Sullivan

Mathematics

8th Grade

Used 9+ times

Transformations
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31 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 5 pts

Which of these transformations does NOT preserve congruence?

Reflection

Dilation

Rotation

Translation

Answer explanation

Dilation makes a shape bigger or smaller, to preserve congruence, the shape must remain the same size.

2.

MULTIPLE SELECT QUESTION

2 mins • 5 pts

Which of these transformations DOES preserve orientation? (there are TWO correct choices!)

Reflection

Translation

Rotation

Dilation

Answer explanation

Reflections and rotations turn the shape, so orientation is not preserved.

3.

MULTIPLE CHOICE QUESTION

2 mins • 5 pts

The angles of a shape always remain congruent, no matter which transformation occurs.

True

False

4.

MULTIPLE CHOICE QUESTION

2 mins • 10 pts

What is the rule for a translation 5 units up and 3 units left?

(x+5, y+3)

(x+3, y+5)

(x+5, y-3)

(x-3, y+5)

5.

MULTIPLE CHOICE QUESTION

2 mins • 10 pts

What is the rule for a reflection across the x-axis?

(x, y)

(x, -y)

(-x, y)

(y, -x)

6.

MULTIPLE CHOICE QUESTION

2 mins • 10 pts

What is the rule for a rotation 180 degrees clockwise around the origin?

(x, -y)

(y, -x)

(-y, x)

(-x, -y)

7.

MULTIPLE CHOICE QUESTION

2 mins • 10 pts

What is the rule for a dilation with a scale factor of 1/2?

(2x, 2y)

(x+1/2, y+1/2)

(1/2x, 1/2y)

(x-1/2, y-1/2)

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