Scale Factor
Trivia
Similar Polygons
Trivia
Proving Triangles Similar by AA
Trivia
Proving Similarity by SSS and SAS
Proportionality Theorems
100
Find the Scale Factor
4/3
100
What country has the most islands?
Sweden
100
The polygons are similar. Find the value of x.
x = 12
100
Who was the 44th president.
Barack Obama
100
Determine whether the triangles are similar. If they are, write a similarity statement.
no; m∠R = 60°
100
What is Taylor Swift’s new album called?
The Tortured Poets Department
100
Determine whether △JKL or △RST is similar to △ABC.
△RST
100
Find the length of AB
AB = 21
200
Find the Scale Factor.
1/3
200
Who played the main character in the movie Gladiator (2000)?
Russel Crowe
200
The polygons are similar. Find the value of x.
x = 11
200
On what two beaches did the Americans fight on D-Day?
Omaha, Utah
200
Determine whether the triangles are similar. If they are, write a similarity statement.
yes; ∠H ≅ ∠J and ∠F ≅ ∠K, so △FGH ∼ △KLJ.
200
What is the only known fish that can blink with both eyes?
Shark
200
In Exercises 5 and 6, find the value of x that makes △DEF ∼ △XYZ.
x = 6
200
Determine whether KM || JN.
NO
300
Find the scale factor.
3/4 or 0.75
300
how many people in America had a valentine?
(put answer as a %)
53%
300
The polygons are similar. Find the values of x and y.
x = 7.5, y = 166
300
What is Sailor Moon’s civilian name?
Usagi (or Serena in the DiC dub)
300
Are the two triangles similar? If so, write a similarity statement.
∠N ≅ ∠Z and ∠MYN ≅ ∠XYZ (vertical angles), so △MYN ∼ △XYZ.
300
Who is the Greek god of the sea?
Poseidon
300
Verify that △ABC ∼ △DEF. Find the scale factor of △ABC to △DEF.
△ABC: BC = 18, AB = 15, AC = 12
△DEF: EF = 12, DE = 10, DF = 8
300
Find the length of VX.
VX = 6
400
The polygons are similar. The area of one polygon is given. Find the area of the other polygon.
Area = 90 square cm
400
In what country did the first Starbucks open outside of North America?
Japan
400
The polygons are similar. Find the values of x and y.
x = 35.25, y = 20.25
400
What’s Mrs Pearson’s favorite color?
Pink
400
Are the two triangles similar? If so, write a similarity statement.
∠Q ≅ ∠MPN (corresponding angles) and ∠N ≅ ∠N, so △LNQ ∼ △MNP.
400
Which animal has the longest tongue?
Giant Anteater
400
Are the two triangles similar? If so, write a similarity statement. Explain our reasoning.
∠ACB ≅ ∠DCE and CE/CB = DC/AC, so △ABC ∼ △DEC.
400
Find the value of the variable.
q = 9
500
The polygons are similar. The area of one polygon is given. Find the area of the other polygon.
108 Square Feet
500
What is the main setting of A Dog’s Way Home book?
Denver Colorado 
500
In table tennis, the table is a rectangle 9 feet long and 5 feet wide. A tennis court is a rectangle 78 feet long and 36 feet wide. Are the two surfaces similar? Explain. If so, find the scale factor of the tennis court to the table.
no; Corresponding side lengths are not proportional.
500
What is Mrs Pearson’s favorite animal?
Beluga Whale
500
A flagpole casts a shadow that is 50 feet long. At the same time, a woman standing nearby who is 5 feet 4 inches tall casts a shadow that is 40 inches long. How tall is the flagpole to the nearest foot?
The flagpole is 80 feet tall.
500
What is the only food that can never go bad?
Honey
500
Certain sections of stained glass are sold in triangular, beveled pieces. Which of the three beveled pieces, if any, are similar?
The pieces with side lengths of 5.25 inches and 7 inches (blue and red)
500
Solve for x.
6