SSS & SAS Similarity Theorems

1. 6.5 SSS & SAS Similarity Theorems
November 18, 2013
Bellwork
Determine if 2 triangles are similar. If they are, write a similarity
statement.
2.
no
Yes; ABE ~ ACD
Find the length of BC
4. A tree casts a shadow that is 30 feet
long. At the same time a person standing
nearby,who is five feet two inches tall,
casts a shadow that is 50 inches long. How
tall is the tree to the nearest foot?
37 ft
7.5
Nov 29­3:09 PM
HW pg.391 #4­22 even, 37
1

2. 6.5 SSS & SAS Similarity Theorems
November 18, 2013
6.5 Prove Triangles Similar by SSS & SAS
SSS Similarity Theorem:the corr. sides of 2
If
R
A
B
C
S
T
s are proportional, then the
s are ~.
If AB = BC = CA, then ABC ~ RST
RS ST TR
Nov 29­3:25 PM
HW pg.391 #4­22 even, 37
2

3. 6.5 SSS & SAS Similarity Theorems
November 18, 2013
Nov 29­3:33 PM
HW pg.391 #4­22 even, 37
3

4. 6.5 SSS & SAS Similarity Theorems
November 18, 2013
SAS Similarity Theorem:an < ≅ to another < in 2nd
If
is
M
are proportional, then are ~.
the
If <X≅<M & ZX= XY then XYZ ~ MNP
,
and the included sides
X
PM MN
Z
Y
P
N
Nov 29­3:37 PM
HW pg.391 #4­22 even, 37
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5. 6.5 SSS & SAS Similarity Theorems
November 18, 2013
Nov 29­3:46 PM
HW pg.391 #4­22 even, 37
5

6. 6.5 SSS & SAS Similarity Theorems
g.
p
HW391
November 18, 2013
#4­22 evens & 37
Nov 29­3:47 PM
HW pg.391 #4­22 even, 37
6

7. 6.5 SSS & SAS Similarity Theorems
November 18, 2013
Nov 1­10:49 AM
HW pg.391 #4­22 even, 37
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