Translations
What do translations do?
Slide/Move
What do reflections do to an image?
Flip, create a mirror image
What do rotations do?
Turn
What do dilations do?
Enlarge or Reduce
What are the 4 types of transformations?
Translations, Reflections, Rotations, Dilations
What operator tells you it moved right and up?
Plus, Addition, +
What are the line of reflection?
x and y axis
Are rotations congruent?
Yes
Do dilations preserve congruence?
No, dilations are the only one that does not preserve congruence
Is Pre Image the original or the new?
Original
What operator tells you it moved left and down?
Minus, Subtraction, -
What is the algebraic rule for a reflection over the y-ais?
(-x,y)
Do rotations change orientation of the vertices?
No, Order of the corners stay the same
How does the scale factor tell us if the dilation enlarged or reduced?
If the scale factor is greater than 1 it enlarges, if the scale factor is less than 1 it reduces
If the figure has a perimeter of 12 units, what will the new perimeter be after a dilation with a scale factor of 4?
48 units
How would you describe this translation?
(x+3,y-6)
right 3 units, down 6 units
what is the rule for a reflection over the x-ais?
(x,-y)
What is the rule for a 90 degree clockwise or 270 degree counter clockwise rotation?
(x,y)->(y,-x)
How would you write the algebraic rule for a dilation with a scale factor of 3?
(3x,3y)
If a figure has an area of 300 units, what will the new area be with a dilation of 3/5?
108 units
what is the algebraic rule is a translation moved 7 unit to the left and 4 units up?
(x-7,y+4)
Yes, it still the same size and same shape
What is the new coordinate for (-3,4) after a 180 degree rotation.
(-x,-y) -> (3,-4)
If point R (3, 6) dilated by a scale factor of 4, what would be the new coordinates for R'?
R' (12,24) it enlarged
What does the P stand for in PRTIA?
Principal