Vocabulary
Translation
Reflection
Rotations
Dilation
100
Define Congruent.
Shapes, or images, that are EXACTLY the same size and shape.
100
What are the new coordinate pairs if the trapezoid is moved 3 units right and 2 units down?
J' (-3,3) K' (0,3) M' (-5, 0) L' (2,0)
100
Over what axis is the following figure reflected on?
The y- axis
100
What do you need to include in a rotation description? (3 Things)
Degrees, Direction, Point of Rotation.
100
What is the new image of G(2, 5) if the scale factor is 6?
G'(12, 30)
200
Define Similar
Shapes or images that have scaled up or down dimensions.
200
Z (5,2) Y (7,2) X (4,3)
3 units left and 4 units down
What are the new coordinate pairs?
Z (2, -2) Y (4, -2) X (1, -1)
200
What is the image of P(-3, 2) after a reflection in the x-axis?
P'(-3, -2)
200
Describe the Rotation.
90 degrees clockwise about the origin
200
A dilation can produce an enlargement and a ____
Reduction
300
What is a reduction's scale factor?
Less than 1
300
What is the rule for the following picture:
(x, y) --> (x - 2, y + 4)
300
D None of them
300
By how many degrees was the blue triangle rotated to reach the red triangle
180 degrees
300
What is the dilation used?
Enlargement of Scale factor 3 3
400
What is an enlargement's scale factor?
More than 1.
400
What is the rule for the following picture:
6 units left and 3 units up
(x, y) --> (x - 6, y + 3)
400
Which axis is B and C reflected on?
Y-axis then X-axis
400
By how many degrees was the pre-image rotated to reach the image
270 degrees counterclockwise
Or
90 degrees clockwise
400
What is the scale factor?
2
500
What happens if I dilate a shape by a scale factor of 1?
Nothing. It stays the same!
500
Find the old coordinate pairs of:
A' (1,5) B' (3,2) C' (7,5) D' (9,2)
Before they were translated 8 units left and 5 units up
A (9,0) B (11, -3) C (15,0) D (17, -3)
500
What is the name of the line of reflection?
x = -2
500
COMBO! What set of transformations is performed on triangle SRT
90 degree counterclockwise followed by a translation of 2 units to the left
500
What is the scale factor of the following dilation?
A(8, 2) --> A'(4, 1)
B(10, 6) --> B'(5, 3)
Scale factor = 1/2