Ratios & Proportions
AA/SSS/SAS Similarity
Triangle Similarity
Proportions in Triangles
Mystery
Mrs. Torres' choice
100
Solve for x:
x/32 = 4/5
x = 25.6
100
According to SSS Similarity, what do two triangles need to have in order to be similar?
All corresponding sides must be propotional.
100
Solve for x given triangle SRT is similar to triangle CBD.
x=8
100
The ratio of angles in a triangle is 3:5:8. Find the measure of the smallest angle.
x = 11.25, smallest angle = 33.75 degrees
100
Congruent triangles are always similar triangles.
True or False
True
100
Who won the first Superbowl?
Green Bay Packers
200
△ABC ~△DEF, Perimeter of △ABC=25u, AB=5u, DE=6u
What is the perimeter of △DEF?
Perimeter △DEF=30u
200
State if the triangles are similar or not and then what similarity statement makes it so.
YES, by AA Similarity
200
Complete the similarity statement.
Triangle DCB
200
Find y.
y=5
200
The diagram is an example of this type of segment.
What is an Altitude?
200
What galaxy does Earth belong to?
The Milky Way
300
Given two equilateral triangles with sides 16 and 20, respectively, what is the scale factor of the smaller triangle to the larger triangle?
16/20 = 4/5 = 0.2
300
State if the triangles are similar or not and then what similarity statement makes it so.
NO, not similar
300
Solve for x given △VUW~△SUT.
x=11
300
Find b.
b=30
300
x = 33.6
300
What year was the first iPhone released?
2007
400
Solve for x.
2/3 = (x+3)/(4x)
x=9/5, 1.8
400
What is it called when the lengths of two sides of one triangle are proportional to the lengths of two corresponding sides of the other triangle and the included angle is congruent?
SAS Similarity
400
(BE)/(EC)=?/(FC)
DF
400
Solve for x.
x = 9
400
What "special" line is shown in the triangles? Use that information to find x. 
medians, x = 19.8
400
How many bones does a shark have?
none
500
x = -23/2, 11
500
State if the triangles are similar or not and then what similarity statement makes it so.
YES, by SAS Similarity
500
Are the triangles similar? If so, complete the similarity statement.
NOT SIMILAR
500
Given the angle bisector, solve for x.
x=5
500
Can you prove congruence? If so, write a triangle congruence statement and state which theorem you are using.
△DEF ≅ △HIG by SAS
500
If you bowled a perfect game, what would your score be?
300