We had a good time!!!!

Here is that poem for anyone that wants it:

So many things have happened since September.
How many of them will you remember?
Will it ever come up somewhere in your mind
The stories I told of my sister’s Jeopardy time?
Or how about the con-men in the class?
They were trying to see if the answer was SAS.
If you ever feel like giving up and living underground,
At least listen for my metal detector sound.
For it would surely go off if it came near to you
Because you all have hearts of gold, it’s true!
Your life will be filled with many adventures.
Like this time when my aunt flushed away her new dentures!
You never know what is around any bend.
It could be a lawnmower in need of a mend!
If I didn’t send you off with some good advice I would be amiss
So if you will do anything for me it is this,
Do not ever limit yourself to what is easy
For knowing what you will miss will make you queasy
I do not mean to sound like a fortune cookie
Just please trust my experience, I’m no rookie!
So off you go and I hope you go glad
I know I will because this class wasn’t half-bad. ♥

hw: 1/11

hw: finish ws on ch 12

12.2 Surface Area of Prisms and Cylinders

Surface area of a right prism

Th. 12.2: S=2B+Ph S= Surface area of a right prism

B=Area of ONE of the bases

P= Perimeter of ONE base

H= height

Surface area of a right cylinder

Th. 12.3: S=2B + Ch S= Surface area of a right cylinder

B=Area of ONE of the bases

C= Circumference of ONE base

H= height

12.3 Surface Area of Pyramids and Cones

Surface area of a regular pyramid

Th. 12.4: S=B+ ½ Pl S= Surface area of a regular pyramid

B=Area of the base

P= Perimeter of the base

l= slant height

Surface area of a right cone

Th. 12.5: S= пr² + пrl S= Surface area of a right cone

r=radius of the base

l= slant height

12.4 Volume of Prisms and Cylinders

Volume of a cube

Postulate 27: V=s³ V= Volume of a cube

s= length of a side

Volume of a Prism

Th. 12.7: V=Bh V= Volume of a prism

B=Area of the base

h= height

Volume of a Cylinder

Th. 12.8: V=Bh V= Volume of a cylinder

B=Area of the base

h= height

12.5 Volume of Pyramids and Cones

Volume of a pyramid

Th. 12.9: V= 1/3 Bh V= Volume of a pyramid

B=Area of the base

h= height

Volume of a cone

Th. 12.10: V= 1/3 Bh V= Volume of a cone

B=Area of the base

h= height

12.6 Surface Area and Volume of Spheres

Surface Area of a sphere

Th. 12.11: S= 4пr² S= Surface area of a sphere

r=radius

Volume of a sphere

Th. 12.12: V= 4/3 пr³ S= Surface area of a sphere

r=radius

hw: 1/10

hw: ws 12-1

notes: 12.1

12.1: Exploring Solids
Polyhedron: solid that is bound by polygons, called faces (think of gold bars) plural: polyhedra or polyhedrons
An edge is where two polygons meet
Vertex- point where 3 or more edges meet
Ex: prism
Pyramid

Other solids: sphere, cone, cylinder

Regular polyhedra have all faces congruent, convex if any 2 points can be connected by a line within the polyhedron

Platonic solids: (named after Plato) (regular polyhedrons)
-tetrahefron (4 faces)
-cube (6 faces)
-octahedron (8)
-dodecahedron(12)
-icosahedron(20)

Euler’s Theorem: The # of faces F, vertices V, and edges E of a polyhegron are related by: F+V=E+2

Pg 723 10-52
Ws 12-1

hw: 1/8

hw: study for QUIZ TOMORROW ON CH 11 50PTS!!!

notes 11-5

11.5 Areas of Circles and Sectors
Th. 11.7: Area of a Circle= pi*r2
A sector of a circ is the region bound by 2 radii (a slice)

Th 11.8: Area of a sector: The ratio of the area A of a sector of a circ to the area of the circ is = to the ratio of the measure of the intercepted arc to 360.
(A / pi*r2 ) = ( m arc AB/ 360 )

16” pizza cut into 8 = slices, what is the area of 1 slice?

Square with sides of 10 inches with 4 circs inside, find the area of the shaded region

Inscribe a pentagon into a circ, find the m of the shaded region if the length of the radii is 8 ft

Prac ws 1-7