Similar Triangle sides.notebook
January 04, 2017
Similar Triangles by Proportional Side Lengths
Do NOW: What does SIMILAR mean?
Similar Figures have the same shape but may have different sizes.
Similar Triangle sides.notebook
January 04, 2017
Similar Triangle sides.notebook
B
January 04, 2017
Corresponding Sides are in proportion.
CA
AB = BC
=
A'B' B'C' C'A'
Angles are congruent. A
A~
=
~
B=
C~
=
C
B'
A'
B'
C'
C'
A'
Always list the corresponding parts of the similar triangles in the same order.
AB corresponds to A'B'
BC corresponds to B'C'
CA corresponds to C'A'
To Prove Triangles Similar Using Triangle Sides
Prove that Corresponding Side Lengths are in Proportion
A D
3
F
5
4
9
15
E
C
Prove that ABC ~ DEF
12
B
Similar Triangle sides.notebook
January 04, 2017
Explain whether RST and UVW are similar by stating the constant of proportionality.
R
U
5
3
V
4
S 20
12
T
W
16
A
H
84
C
72
48
Solve for the missing side length
B
12
G
14
8
F
Similar Triangle sides.notebook
January 04, 2017
Solve for the missing side length
Finding missing measures in similar triangles:
ABC ~ ADE
Find x
B
D
x ft
0.8 ft
C
E
14 ft
7 ft
A
Similar Triangle sides.notebook
Solve for the missing side length
January 04, 2017