Vocab
A motion that preserves length and angle measures
What is a rigid motion?
If a point is reflected over the y-axis, which coordinate point will change?
What is the x-coordinate?
What degree is a full rotation to have a figure land onto the original figure?
What is 360 degrees?
What two directions would a figure need to translate to have a negative rule?
Example: T<-1,-1>
What is left and down?
In a composition of rigid motions, which transformation is completed first?
Ry-axis | T<2,1>
What is T<2,1>?
A transformation that reflects each point in the preimage across a line of reflection
What is a reflection?
If a point is reflected over the x-axis, which coordinate point will change?
What is the y-coordinate?
If a rotational degree is negative, which direction are you rotating the point?
r(-90,O)
What is rotating clockwise?
If point (-4,0) is translated up 2 units and right 9 units, where is the new coordinate point?
What is (5,2)?
Which transformation keeps the same orientation of a figure?
What is a translation?
A transformation that maps all points of a preimage the same distance and in the same direction
What is a translation?
What is Rx-axis?
If a point is in Quadrant 3 and is rotated 270 degrees, what quadrant would the point end up in?
What is Quadrant 2?
If a point is translated 3 units right and 2 units down, what would the rule need to be in order to go back to the original point?
What is 3 units left and 2 units up?
What are the two types of symmetry?
What are reflectional and rotational symmetry?
A transformation that rotates each point in a preimage about a point by an angle measure of x degrees
What is a rotation?
If point (-3,-4) is reflected over the x-axis, what would the new coordinate point be?
What is (-3,4)?
If point A is at (1,2) and is rotated 90 degrees, where would point A' be?
What is (-2,1)?
90 = (-y,x)
If point A is at (-7,-1) and the translation below occurs, where would point A' be?
T<5,-3>
What is (-2,-4)?
How many lines of symmetry does a square have?
What is 4 lines?
What is the composition of rigid motions?
Where would point (3,-4) land if we reflected it over the x-axis and then the y-axis?
What is (-3,4)?
If a point is at (-2,4), where would the point land if we rotated it 270 degrees?
Write the rule. (x,y) > ?
What is (4,2)?
What is (x,y) > (y, -x)?
If a preimage is translated 5 units up and 3 units left, what are the two ways to write the rule?
What is T<-3,5>?
What is (x-3,y+5)?
In a regular octagon, how many lines of symmetry are there, and what is the degree of rotational symmetry?
What are 8 lines?
What is 45 degrees?