Slope
Are They Similar?
Find the Missing Side Length
Dilation
Random
PICK AT YOUR OWN RISK
100
What is a way to describe slope
rise over run
or
steepness of a line
100
Are these triangles similar? Explain how you know.
No they do not have the same angles so they can not be similar.
The first triangle's angles are 30, 90, and 60
The second triangles's angles are 45, 90, and 45
100
Find the missing side length:
6
100
What does dilation do to a shape?
It changes the size of the shape.
(makes it bigger or smaller)
100
Is the point (18,23) on the line? 
No
100
200
Find the slope of the line
3/2
200
Are these triangles similar? Explain how you know.
Yes because the corresponding side lengths have the same scale factor of 1.5
21/14 = 15/10
200
Find the value of y if the triangles are similar.
5.33333....
200
What is the scale factor to the dilation shown?
scale factor = 2
200
What is the slope of the line?
slope is undefined
200
300
Find the slope of the line
-1/2
300
Are these triangles similar? Explain how you know.
no they do not have the same scale factor for all sides.
300
Find the value of y
6
300
What is the scale factor to the dilation shown?
scale factor =
1/2
300
Triangle A has the angle measures 35 degrees and 92 degrees.
Triangle B has the angle measures 35 degrees and 53 degrees.
Are these two triangles similar?
Yes
300
Congrats! You earned a free 300 points for your team!
400
Find the slope of the line.
2/3
400
Are these triangles similar? Explain how you know.
5/4 = 7.5/6 = 10/8
yes they are similar because their corresponding side lengths all share the same scale factor.
400
Find the value of x
3 1/3 or 10/3
400
What would be the coordinates of B' you dilated the red triangle with a scale factor of 3?
B' = (-3,9)
400
Define the following terms:
Similar
Congruent
400
500
What is the slope of a horizontal line?
0
500
Are these triangles similar? Explain how you know.
no the corresponding side lengths do not have the same scale factor.
500
ABE and CDE are similar. Find the value of AE
? = 18
500
What would be the coordinates of A' if you dilated ABC about the origin with a scale factor of
1/3
?
A' = (-1,1)
500
Find the value of h
Hint!! Find the value of AD first!
h = 2.7 m
500
