Rigid Transformations
Dilations
Similarity
Slope
Triangles
100
A flip in math.
Reflection
100
True or False? Dilations always make a figure smaller.
False
100
What do you need to compare when proving if two shapes are similar?
1) Corresponding sides
2) Corresponding angles
100
Slope is the measure of this.
Steepness
100
The sum of all interior angles in a triangle will always equal this number.
180^o
200
A slide in math.
Translation
200
A dilation might change the size of a figure's side lengths but never the _______.
angles
200
What four geometric transformations can be used to prove similarity.
1) Translations
2) Rotations
3) Reflections
4) Dilations
200
Slope is the change in ______ over _____.
Vertical distance (Y) over Horizontal distance (X)
Rise over run
200
If two triangles have at least _____ of their angles equal, the triangles are similar.
two
300
A turn in math.
Rotation
300
Dilations always produce ___________ figures.
similar
300
Congruent figures are _____ similar.
(sometimes, always)
always
300
The slope of this line.
2/3
300
What is the measure of the missing angle?
35^o
400
Describing a translation requires these two things.
1) Direction
2) Distance
400
Dilations need these two things.
1) Center Point of Dilation
2) Scale Factor
400
Is a rectangle with side lengths 3 and 5 similar to a rectangle with side lengths 12 and 15?
No (3x4=12, but 5x4 doesn't =15)
400
The slope of this line.
1
400
Similar or Not? Why?
Similar because their angles are congruent
500
Describing a rotation requires these three things.
1) Center (Point)
2) Rotation angle (Degrees)
3) Direction (Clockwise or Counterclockwise)
500
How will dilating a figure with a scale factor of 1/3 change a figure?
It will make the figure 3 times smaller from the center of dilation.
500
Dilations can result in a congruent figure if their scale factor is this number.
1
500
What is the slope of a line that runs through the points (1,2) and (7,5)?
1/2
500
These two triangles are similar. Find the missing side lengths.
s=12
t=15