1. Lesson 40.notebook
November 11, 2013
Assignment:
1­­>Set 40 (evens) ­ Due Tomorrow (11/12)
2­­>Test #5 signed??

2. Lesson 40.notebook
November 11, 2013
Lesson 40 Warm­Up:
1)
Write 32% as a decimal and as a reduced fraction.
2)
Combine like terms:
3)
Expand:
xyz + yxz ­ zyx ­ x2yz
­4x(2x ­ 9)
10 feet
4)
Simplify: 1/9 + 4/6 4/12
5)
Find the perimeter:
12 feet
15 feet

3. Lesson 40.notebook
Lesson 40
*sector – a portion of the interior of a circle enclosed
by two radii and an arc (a part of a circle)
*central angle – the angle formed by 2 radii and
determines the fraction of the area of the circle the
sector occupies
FYI...Area of a circle ­ pi times radius squared
x r2
November 11, 2013

4. Lesson 40.notebook
Examples ­ Lesson 40
pg. 267
A)
B)
C)
November 11, 2013

5. Lesson 40.notebook
D)
E)
November 11, 2013

6. Lesson 40.notebook
F)
G)
H)
November 11, 2013

7. Lesson 40.notebook
November 11, 2013
Investigation #4 (vocab):
*geometric solids ­ a 3­D geometric figure
*faces ­ a flat surface of a geometric solid
*edges ­ a line segment formed where 2 faces of a geometric solid
intersect
*vertex (vertices) ­ a point where 2 edges of a geometric solid meet
*polyhedron ­ a geometric solid whose faces are polygons
*prism ­ a polyhedron with 2 congruent parallel bases

8. Lesson 40.notebook
November 11, 2013
*pyramid ­ a type of polyhedron with lateral surfaces that narrow to a
point
*cylinder ­ a geometric solid with 2 parallel bases that are circles
*cone ­ a geometric solid with one circular base that connects to a point
*sphere ­ a smooth curved solid, that has every point the same distance
from its center