Upload
danghuong
View
215
Download
0
Embed Size (px)
Citation preview
4
ex: COLT SWAG. List all pairs of congruent angles. Write the ratios of corresponding sides
~
C
OL
T
S
W
A
G
6
If 2 polygons are similar, then the ratio of lengths of 2 corresponding sides is called a scale factor
B
C
A
D
E
F
G
H
15
12
9
6
10
8
6
4
ex: Decide whether the figures are similar. If so, write a similarity statement.
7
ex: The patio around a pool is similar to the pool. Calculate the scale factor of the patio to the pool, and find the ratio of their perimeters.
If 2 polygons are similar, then the ratio of their perimeters is equal to the ratios of their corresponding side lengths.
54'
30'
36'
20'
12
AngleAngle (AA) Similarity PostulateIf 2 in 1 triangle are ≅ to 2 of another triangle, then the triangles are similar
13
ex: The color variation in the crystal shown lie in an isosceles triangle. In the triangle, if the vertex angle is 47 , explain why the triangles are similar.