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Translations
Rotations
Reflections
Dilations
Vocabulary
100
Label and state the prime image of A(1, 4) after a translation 4 units up and 5 units left?
A'(-4, 8)
100

What is the default direction for a rotation if none is specified?

Counter-clockwise

100
True or False: Reflections preserve size and orientation.
False - orientation is not preserved under a reflection.
100

True or False: A dilation is not a rigid transformation.

True - A dilation does not preserve the size of the shape.

100

What is an image?

the new figure after a transformation

200
Translate L(-3, -2) A(0, -1) D(3, -2) 1 unit right and 3 units up.
L'(-2, 1) A'(1, 2) D'(4, 1)
200

True or False: Rotating a figure 90 degrees counterclockwise is NOT the same as rotating a figure 270 degrees clockwise.

False - rotating a figure 90 degrees IS the same as rotating a figure -270 degrees.

200
What is the new coordinate point of H(-7, 9) if you reflect it over the x-axis?
H'(-7, -9)
200
What is the new image of G(8, 10) if it undergoes a dilation by a factor of 25?
G'(200, 250)
200

A line of reflection can also be called this.

line of symmetry

300

What is the translation if the points are going from A(-3, -4), B(-1, -5) to A'(3, -4), B'(5, -5)?

(x + 6, y)

300

What is the new image of Z(-4, 1) if you rotate it 270 degrees counterclockwise?

Z'(1, 4)

300

What are the points of the new image D(-1, -4) E(2, -4) F (2, 5) after a reflection over the x- and y-axis?

D'(1, 4) E'(-2, 4) F'(-2, -5)

300

What is the dilation factor if A(-2, 3) mapped to A'(-1, 1.5)?

dilation with a scale factor of 1/2

300

What is the difference between an enlargement of a shape and a reduction?

Enlargement is a dilation by a number bigger than 1, Reduction is a dilation by a number between 0 and 1.

400

What is the coordinate point of the pre-image A given that A' is (8, -7) and underwent T(x - 2, y + 3)

A(10, -10)

400
How many degrees was the figure rotated if the new image of X(-4, 2) Y(-4, 0) Z(0, 3) is X'(4, -2) Y'(4, 0) Z'(0, -3)?
Rotation of 180 degrees
400

What is the line of reflection if L(1, 4) M(1, 0) N (3,0) mapped to L'(-1, 4) M'(-1, 0) N'(-3, 0)?

reflection over the y-axis

400

D 1/4 of A(-4, -6) B(2, 8) C(-2, -4)?

A(-1, -1.5) B'(1/2, 2) C'(-1/2, -1)

400

__________ are the same size and shape; corresponding angles are congruent.

Congruent figures

500

What does this notation mean (x + 4, y - 2)?

translate 4 units right and 2 units down.

500

What is the pre-image of M'(-2, 2) N'(-1, -2) O'(-3, -3) after a rotation of 180 degrees?

M(2, -2) N(1, 2) O(3, 3)

500

What is the pre-image of A'(4, 0) B'(5, 1) and C'(4, -4) if it was reflected in the x-axis?

A(4, 0) B(5, -1) C(4, -4)

500
What is the original image of D'(-8, -12) E'(-8, 12) F'(12, -8) if it underwent a dilation by 2?
D(-4, -6) E(-4, 6) F(6, -4)
500

What is a rigid transformation?

Transformation that changes position without changing size or shape of figure.