Finding Scale Factor
X =
Triangles!
Similar or Not Similar?
100
If a cube of edge length 12 cm is enlarged to create a cube of edge length 36 cm. What is the scale factor?
3
100
If the scale factor is 4, what is the measurement of x?
24m
100
The side CB corresponds to the side ___
ZY
100
Are these two triangles similar?
YES!
200
What is the scale factor used to make figure B?
1/2 or 0.5 or 50%
200
These triangles are similar. The value of the unknown side length x is ...
9
200
What is the scale factor when creating the second shape?
1.25
200
Are these triangles similar? Why or why not?
NO! 5/15 is not the same as 4/6.
300
What is the Scale Factor from triangle DEF to triangle D'E'F'?
1.5cm
300
Find the value of x and y if these triangles are similar:
y = 9
x = 32
300
Which angle corresponds with ∠X?
∠E
300
A traingle has one interior angle of 58o. A similar traingle has one interior angle of 90o. What are all 3 of the interior angles of both triangles?
58, 90, and 32
400
What is the Scale Factor used to create Figure B?
4
400
The value of the unknown side length x is ...
x = 15.75
400
How tall is the flag pole?
51 ft.
400
Are these triangles similar? Why or Why not?
Yes!
500
A rectangular garden is drawn on a blueprint using a scale factor of 1:20. On the blueprint, the garden measures 6 cm by 4 cm. What are the dimensions of the actual garden?
Length: 1.2 meters (120cm)
Width: 0.8 meters (80cm)
500
Use the similar triangles below to find the height of the tree.
44ft
500
20 ft.
500
A famous painting is being reproduced as a smaller framed print for sale in a gift shop. The original painting is 240 cm wide and 160 cm tall. The print version is scaled down so that its width is 60 cm.
What is the scale factor from the original painting to the print? And how tall is the print version?
Scale factor = 1/4 or 0.25
The print will be 40cm tall.