Finding Scale Factor
X =
Corresponding Sides & Angles
Similar or Not Similar?
100
What is the scale factor from the small fry to the large fry?
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
Using the scale factor, what is the value of x?
20
200
The value of the unknown side length x is ...
7
200
The side AB corresponds to the side _______
XY
200
Two perfect squares of different sizes are drawn on the board. Are the shapes similar or not? Explain.
Yes they are similar - all the angles are 90 degrees!
300
What is the Scale Factor from triangle DEF to triangle D'E'F'?
1.5cm
300
The value of the unknown side length, ? is ...
?=20
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 from triangle ABC to triangle DEF?
1/2
400
The value of the unknown side length ? is ...
? = 7.2
400
What is x?
x=8
400
A triangle has two interior angles of 37o and 82o. A larger triangle has two interior angles of 37o and 61o. Are these two triangles similar?
Yes! The both have the same angles so they have to be similar.
500
A flagpole and a model flag pole have a scale factor of 1 in.= 4 ft. If the model pole measures 12 inches, how tall is the pole in feet?
48ft
500
Use the similar triangles below to find the height of the tree.
44ft
500
What are corresponding angles or side measures on the original compared to the scaled model are...?
the same (equivalent or equal)
500
Are all of these triangles similar? Which ones are and which ones aren't?
They are all similar!