1. lesson 18.notebook September 27, 2012
Assignment:
1­­>Set 19 (odds) ­ Due Monday (10/1)
2­­>Test #2 ­ Monday (10/1)
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2. lesson 18.notebook September 27, 2012
Lesson 18 Warm­Up:
1) Find the unknown number: 1001 = 13
x
Which property is illustrated by the following equations:
2) 1/2 x 2/2 = 2/4
3) 1/2 x 2/1 = 1
4) Convert 3 16/7 to a mixed number.
5) Simplify: 2/5 x 2/5 x 2/5
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3. lesson 18.notebook September 27, 2012
Lesson 18:
*polygon ­ a closed, flat shape with straight sides
http://www.youtube.com/watch?v=TTrbT_SSD0U
*regular polygon ­ a polygon with all sides equal and all angles equal
*Look at page 122!
*similar ­ figures that are the same shape, but not necessarily the same size
*congruent ­ figures that are the same shape AND the same size
*corresponding parts ­ sides or angles of similar polygons that occupy the same
relative positions
*Look at page 123!
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4. lesson 18.notebook September 27, 2012
Examples ­ Lesson 18:
pg. 124
A) octagon
B) square
C) acute angle
D) Yes...they are the same shape ­ but not necessarily the same size
E) No
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5. lesson 18.notebook September 27, 2012
F)
pentagon­­>
hexagon­­>
heptagon­­>
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6. lesson 18.notebook September 27, 2012
G) angle B
H) equal in measure
I)
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7. lesson 18.notebook September 27, 2012
J) B ­ because it is not "closed"
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