1. Geom9­5.notebook February 07, 2012
BELL WORK: Find the perimeter of a rhombus with diagonals
12 km and 16 km.
homework questions: p.387 #1abc,4­8,13,14,17
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2. Geom9­5.notebook February 07, 2012
9.5 Distance Formula
y
6
Where does it come from? 5
4
3
2
1
x
­6 ­5 ­4 ­3 ­2 ­1 0 1 2 3 4 5 6
­1
­2
­3
­4
­5
­6
How do we do this without the triangle?
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3. Geom9­5.notebook February 07, 2012
Another example, with a twist: y
10
8
6
4
2
x
­10 ­8 ­6 ­4 ­2 0 2 4 6 8 10
­2
­4
­6
­8
­10
EXIT SLIP: Find the distance between the points (4,1) and (7,5).
Homework: p.394 #1def, 2­4, 6
due Thursday
quiz Thursday
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