1. Day 13­4
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Angle­Angle Similarity ﴾AA﴿ Postulate
If two angles of one triangle are congruent to two angles of another
triangle, then the triangles are similar.
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Side­Angle­Side Similarity ﴾SAS﴿ Theorem
If an angle of one triangle is congruent to an angle of a second triangle,
and the sides including the two angles are proportional, then the triangles are similar.
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Side­Side­Side Similarity ﴾SSS﴿ Theorem
If the corresponding sides of two triangles are proportional, then the triangles are
similar.
Feb 3­8:55 AM
1

2. 1. Are the following triangles similar? If so, write a
similarity statement.
b) c)
a)
Feb 3­9:05 AM
2

3. 2. Joan places a mirror 24 ft from the base of a
tree.When she stands 3 ft from the mirror, she can
see the top of the tree reflected in it. If her eyes are 5
ft above the ground, how tall is the tree?
TR represents the height of the tree, Point M represents
the mirror, and point J represents Joan’s eyes.
3. In sunlight, a cactus casts a 9­ft shadow. At the same time, a person 6 ft tall casts a 4­ft
shadow. Find the height of the cactus.
Feb 3­9:14 AM
3

4. Similar Triangles Proofs
Day 5
Apr 27­2:04 PM
4

5. Apr 27­2:04 PM
5

6. Apr 27­2:14 PM
6

7. Prove:
Apr 27­2:42 PM
7

8. Apr 26­8:34 AM
8