Rigid Transformations
Dilations 1
Dilation 2
Similarity
Random
100
To "flip" a figure.
Reflection
100
True or False? Dilations always make a figure smaller.
False
100
Is a dilation of 1.5 an enlargement or reduction?
Enlargement (Gets bigger)
100
Draw an example of similar squares. Side lengths MUST be included!
100
How tall is Miss K?
6'1"
200
To "slide" a figure.
Translation
200
A dilation might change the size of a figure's side lengths but never the _______.
angles
200
A dilation with scale factor 1 means the new image is _____ to the original image
Equal
200
These two triangles are similar. What is the ratio of side a/b?
a/b = 2.1/1.4
200
The sum of all interior angles in a triangle will always equal this number.
180^o
300
To "turn" a figure.
Rotation
300
Dilations always produce ___________ figures.
similar
300
If the scale factor is greater than 1 then the dilated image is ______________ than the original figure.
bigger
300
Congruent figures are _____ similar.
(sometimes, always)
always
300
Similar or not similar?
Not similar - angles are not the same.
400
Why is a dilation NOT a rigid motion?
Because it changes the size of a figure / doesn't preserve congruence
400
Dilations need these two things.
1) Center Point of Dilation
2) Scale Factor
400
If the scale factor is less than 1 then the dilated image is ____________ from the original figure.
Reduced
400
Similar figures are ____ congruent.
(sometimes, always)
sometimes
400
Find the scale factor. Figure EFGH is the original.
Scale factor = 2
500
How will dilating a figure with a scale factor of 1/3 change a figure?
It will make the figure smaller than the original
500
Dilations can result in a congruent figure if their scale factor is this number.
1
500
These two triangles are similar. Find the missing side lengths.
s=12
t=15
500
What is the value of X and Y when the scale factor is 1/4?
X= 32 (8x4)
Y= 9 (36x1/4) or (36/4)
600
Describe this dilation:
This is a reduction. The center of dilation is (0,0) and the scale factor is 1/5. *Double points for naming the original coordinate points!*
600
What is the scale factor of this dilation?
3
600
What is the scale factor for this reduction?
1/2
600
What is Miss K's middle name?
LOL you'll never know.