Rigid Transformations
Dilations 1
Dilation 2
Similarity
Random
100
To "flip" a figure over a line
Reflection
100
True or False? Dilations always make a figure smaller.
False
100
Is a dilation of 7/5 an enlargement or reduction?
Enlargement (Gets bigger)
100
What is the scale factor from left to right?
100
When is our Unit 3 test over Dilations and Sequence Transformations
January 10th
200
To "slide" a figure.
Translation
200
A dilation might change the size of a figure's side lengths but never the _______.
angles or shape
200
What transformation creates a similar figure?
Dilations
200
Point A has the coordinates (4, -3). What is the scale factor used if the new coordinates are A' (2, - 3/2)?
Scale factor = 1/2 or 0.5
200
Complete the sentence. Corresponding sides of similar figures are ______________________
Proportional
300
To "turn" a figure clockwise or counter clockwise
Rotation
300
Which of the following is an enlargement?
a) 2/3
b) 1/2
c) 5/3
d) 1
c) 5/3
300
If the scale factor is greater than 1, then the dilated image is ______________ from the original figure.
Enlarged
300
Congruent figures are _____ similar.
(sometimes, always)
always
300
What is the scale factor
k = 1/3
400
When we describe a translation we need to be sure to say:
1) Direction
2) Distance
400
Dilations need these two things.
1) Original measure or coordinate
2) Scale Factor
400
If the scale factor is less than 1 (ex:1/4) 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
Describing a rotation requires these three things.
1) Center (Point)
2) Rotation angle (Degrees)
3) Direction (Clockwise or Counterclockwise)
500
If a 5" square is dilated using a scale factor of 2, how many times larger will the area of the new square be?
4 times larger
500
What scale factor would create an image that is congruent to the preimage?
k = 1
500
These two triangles are similar. Find the missing side lengths for s AND t.
s=12
t=15
500
A point has the coordinates (8, -2). What are the new coordinates after a dilation using a scale factor is 1/4 and the origin as the center of dilation?
(2, -0.5)