A flip in math.
Reflection
True or False? Dilations always make a figure smaller.
False
Similar figures have...
1. Equal corresponding angles
2. _______ corresponding sides
1. Equal corresponding angles
2. Proportional corresponding sides
The sum of all interior angles in a triangle will always equal this number.
180^o
What is Slope?
vertical distance divided by horizontal distance
A slide in math.
Translation
A dilation might change the size of a figure's side lengths but never the _______.
angles
What transformations can be used to prove similarity.
List all 4.
1) Translations
2) Rotations
3) Reflections
4) Dilations
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.
Find the slope of line a.
4/2 or anything equivalent
Describing a reflection requires 1 thing. What is it?
Reflection line.
Dilations always produce Similar or Congruent figures.
similar
Congruent figures are _____ similar.
(sometimes, always)
always
What is the measure of the missing angle?
35^o
Find the slope of line b
4/4 or anything equivalent
Describing a translation requires these two things.
1) Direction
2) Distance
Dilations need these two things.
1) Center Point of Dilation
2) Scale Factor
Similar figures are ____ congruent.
(sometimes, always)
sometimes
Similar or Not? Why?
Similar. Because corresponding angles are the same.
Find the slope of line c.
2/4 or anything equivalent.
Describing a rotation requires these three things.
1) Center (Point)
2) Rotation angle (Degrees)
3) Direction (Clockwise or Counterclockwise)
How will dilating a figure with a scale factor of 1/2 change a figure?
It will make the figure 2 times smaller from the center of dilation.
Are these dilations of each other? Why or why not?
No. We need to scale every side length.
These two triangles are similar. Find the missing side lengths.
s=12
t=15
Write an equation for this line.