rise over run
or
steepness of a line
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
Find the missing side length:
6
What does dilation do to a shape?
It changes the size of the shape.
(makes it bigger or smaller)
Is the point (18,23) on the line?
No
Find the slope of the line
3/2
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
Find the value of y if the triangles are similar.
5.33333....
What is the scale factor to the dilation shown?
scale factor = 2
What is the slope of the line?
slope is undefined
Find the slope of the line
-1/2
Are these triangles similar? Explain how you know.
no they do not have the same scale factor for all sides.
Find the value of y
6
What is the scale factor to the dilation shown?
scale factor =
1/2
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
Congrats! You earned a free 300 points for your team!
Find the slope of the line.
2/3
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.
Find the value of x
3 1/3 or 10/3
What would be the coordinates of B' you dilated the red triangle with a scale factor of 3?
B' = (-3,9)
Define the following terms:
Similar
Congruent
What is the slope of a horizontal line?
0
Are these triangles similar? Explain how you know.
no the corresponding side lengths do not have the same scale factor.
ABE and CDE are similar. Find the value of AE
? = 18
What would be the coordinates of A' if you dilated ABC about the origin with a scale factor of
1/3
?
A' = (-1,1)
Find the value of h
Hint!! Find the value of AD first!
h = 2.7 m