Rigid Transformations
Dilations
Similarity
Triangles
Slope
100
A flip in math.
Reflection
100
True or False? Dilations always make a figure smaller.
False
100
Similar figures have...
1. Equal corresponding angles
100
The sum of all interior angles in a triangle will always equal this number.
180^o
100
What is Slope?
vertical distance divided by horizontal distance
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 transformations can be used to prove similarity.
List all 4.
1) Translations
2) Rotations
3) Reflections
4) Dilations
200
Triangles 1 and 2 each have a 38° angle. Are they automatically similar? Why or why not?
no. We need two of the same angles.
200
Find the slope.
(6,12) , (15,-3)
1
300
Describing a reflection requires 1 thing. What is it?
Reflection line.
300
Dilations always produce Similar or Congruent figures.
similar
300
Congruent figures are _____ similar.
(sometimes, always)
always
300
What is the measure of the missing angle?
35^o
300
Find the slope.
(9,3) , (19,-17)
-2
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
Similar figures are ____ congruent.
(sometimes, always)
sometimes
400
Similar or Not? Why?
Similar. Because corresponding angles are the same.
400
Find the slope.
(20,8) , (9,16)
8/-11
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 1/2 change a figure?
Make the figure half of its size. (smaller)
500
Are these dilations of each other? Why or why not?
No. There are multiple Scale Factors.
500
These two triangles are similar. Find the missing side lengths.
s=12
t=15
500
Find the slope
(-4,7) , (-6,-4)
11/2