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Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review:...

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unit 4 day 1 notes.notebook May 06, 2014 Unit 4: Exploring Three Dimensional Figures
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Page 1: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

Unit 4: Exploring Three­Dimensional Figures

Page 2: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

Cylindera solid with congruent circular bases in a pair of parallel planes

Cone has a circular base and a vertex

Page 3: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

Sphere a set of points in space that are a given distance from a given point.

Prism a polyhedron with two congruent faces that are polygons contained in parallel planes

The two parallel faces are called bases of the prism.

The other faces are called lateral faces, and are shaped like parallelograms

A regular prism is a prism whose bases are regular polygons

Page 4: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

Pyramid

http://www.mathsnet.net/geometry/solid/pyramids.html

a polyhedron that has all faces except one intersecting at one point

One base

All faces are triangles

All faces meet at an endpoint (vertex)

Surface Area

Surface Area:  the sum of the areas of its outer surfaces

Page 5: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

Review:

Area of a Triangle: 1/2 b*h

Area of a Rectangle/Square: l*w

Area of a Parallelogram: b*h

Area of a Trapezoid: 1/2*h*(b1 + b2)

Regular square pyramid- a square pyramid with congruent triangular faces

12 in.

10 in.

Find the surface area:

Area of base:

Area of faces (4):

Example 1

Page 6: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

4

3

5

6

Find the surface area of the triangular prism. bottom:

front:

back:

bases:

Example 2

Page 7: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

2.

3.

Page 8: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

4.

Try These5. 6.

Page 9: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

Surface Area of Cylinders, Cones, and Spheres

CylinderSA = 2πrh + 2πr2

h

r

Cone SA = πrs + πr2

slant height(s)

r

h

Page 10: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

SphereSA = 4πr2

r

Example 710

30

Page 11: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

Example 8

5 cm

7 cm

Example 94 m

10 m

Page 12: Unit 4: Exploring Three Dimensional Figures · unit 4 day 1 notes.notebook May 06, 2014 Review: Area of a Triangle: 1/2 b*h Area of a Rectangle/Square: l*w Area of a Parallelogram:

unit 4 day 1 notes.notebook May 06, 2014

Example 10

10 m


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