Translations
Reflections
Dilation
Rotation
Rigid Motions
100
A Translation is when you do what to a figure?
When you move the figure up, down, right, or left.
100
What is a reflection?
A flip over a line. It is the same distance from the original position. A mirror
100
What is a dilation?
An enlargement or a shrinkage of an image or shape.
100
What is a Rotation?
The distance from the center to any point on the shape stays the same. Every point makes a circle around the center.
100
What is another word used to describe rigid motions?
Isometries
200
When translating an object, which direction would you apply to the "y" coordinate?
up or down
200
In what axis is the triangle being reflected over?
y- axis
200
The point (8, 12) was dilated to become point (2, 3). What was the scale factor?
1/4
200
What are the following CCW rotations in CW?
CCW: Counterclockwise
CW: Clockwise
180 CCW=
270 CCW=
360 CCW=
EX: 90 CCW= 270 CW
180 CCW= 270 CW
270 CCW = 90 CW
360 CCW = 360 CW
200
What is the rule for the following reflection?
Reflection across x = 3
300
Determine how to translate triangle A'B'C' to triangle ABC.
(X+2, Y-9)
300
Identify line of reflection
y = x
300
How do you write the algebraic notation when the scale factor is 3?
(x, y) --> (3x, 3y)
300
What is the image of the point (6,-1)(6,−1) after a rotation of 270 counterclockwise about the origin?
(9,8)
300
Rotate the point (-3,-4) around the origin 180 degrees. State the image of the point.
(3,4)
400
How is trapezoid ABCD translated to trapezoid A'B'C'D'?
Translated 8 units down and 5 units to the right.
400
At what point will the triangle be at if you reflect Point C over the y-axis:
(-3, 2)
400
Ms. Rutledge goes to michaels and buys a sketch books that is 18 by 24. If she draws a person on one of the pages, and its 4x smaller than the original, what would be her new length and width?
4.5 and 6
400
Triangle D is rotated 180° clockwise with the origin as the center of rotation to create a new figure. Which triangle shows the new location?
Triangle B
400
What transformation is happening?
(x, y) ----> (x + 2, y - 3)
slide right 2, down 3
500
Point K (4, 2) is translated using this rule:
(x, y)----> (x + 3, y - 1)
What are the coordinates of K'?
(7, 1)
500
What is the rule for the following reflection?
Reflection across x = 3
500
Emma has a poster of Charlotte that measures 40 inches by 32 inches. After dilation the new poster is 160 inches by 128 inches. Find the scale factor that was used to dilate the poster.
k = 4
500
What is the angle of rotation for this counterclockwise rotation about the origin?
270°
500
Triangle ABC is shown below. Suppose the triangle is translated 5 units to the right and 7 units down. What are the coordinates of the image of vertex C after this transformation?
(2, -6)