1. Opener:
Please complete the following on your *NEW* opener sheet!!! Please also
leave your homework on your desk for me to check in.
The Geometric Mean between 3 and 6 is:
x2= 18
x = 3√2
Using the model above, find the Geometric Mean of each of the following
pairs of numbers:
1.) 3 and 3
2.) 4 and 25
3.) 5 and 30
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2. 8.1 Right Triangle Similarity
What could you conclude about the three triangles formed when an altitude
was drawn to the hypotenuse of a right triangle?
C
C
A
A D B
B D A
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3. We used the idea of similar triangles to find the answers for # 5. Today we're
going to use Geometric Mean as a shortcut for this!!
C
*Middle Altitude (Altitude in 2 smaller triangles)
D
*Outside Altitudes (Altitudes in big triangle &
1 small triangle)
A B
5A.) 5B.) 5C.)
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4. Geometric Mean Group Practice:
1. Solve for the variables.
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5. 2. Solve for the variables.
5

6. 3. Solve for the variables.
6

7. 4. Solve for the variables.
7

8. 5. Solve for the variables.
8

9. 6. Solve for the variables.
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10. Mastermind!!!!
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