Dilation
Similarity Statements
Solve for the Missing Side
Proportional Equations
Grab Bag
Similar, or Not?
100
If ABC was dilated from the origin to create A'B'C', what was the scale factor? 
Scale factor: 2
100
If ABCD ~ GHIJ, which side in GHIJ corresponds to side BC?
HI
100
Find the missing length. The triangles are similar.
10
100
Solve for x:
x/3=21/9
x=7
100
Two triangles that have two corresponding angles congruent are similar by ___________________.
AA~
100
Triangle 1: sides 8, 12, 10
Triangle 2: sides 24, 20, 16
Similar or Not? Name the theorem it satisfies or fails.
Yes by SSS
200
If ABC was dilated from the origin to create A'B'C', what was the scale factor?
Scale factor: 3
200
Complete the similarity statement:
KLM ~ TUV
200
Find the missing length. The triangles are similar.
28
200
Solve for x:
15/x =20/8
x=6
200
enter Q
14
200
No, fails AA
(top 52˚, 89˚, 39˚,
bottom 43˚, 89˚, 48˚)
300
If Figure A was dilated from the origin to create Figure B, what was the scale factor?
Scale factor:
5/2
300
Complete the similarity statement:
Triangle RQP ~ Triangle TUV
300
Find the missing length. The triangles are similar.
35
300
Solve for x:
5/14=6/x
x=16.8 or
84/5
300
A midsegment of a triangle is a line segment that connects the ____________ of two sides of a triangle.
midpoints
300
Yes by Side Splitter (
9/36 = 10.5/42
) OR by SSS
400
If PQR were dilated from the origin by a scale factor of 3 to create P'Q'R', what would be the coordinates of Q'? 
Q'(9, 3)
400
Complete the similarity statement:
ABC ~ EFG
400
BC is parallel to DE, solve for x:
A:
400
Solve for x (leave answer as a fraction):
5/(x+6)=7/9
x=3/7
400
1. How many midsegments does a triangle have?
2. How many congruent triangles do they form when all are drawn?
3 midsegments
4 congruent triangles
400
Yes by SAS (vertical angles and
8/18 = 12/27
500
If ABCD were dilated from the origin to create A'B'C'D' with a scale factor of 4, what would be the coordinates of C'? 
C'(-8, 4)
500
Complete the similarity statement:
DCB ~ WVU
500
Find the missing length. The polygons are similar.
18
500
Solve for x (leave answer as a fraction):
3/4 = (2x-7)/13
x=
67/8
500
Q
scale factor 2, P1 = P2 =
500
Q
A