intro to 3dimensional solids identify prisms, pyramids ...€¦ · u8 l7 intro to solids and...

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U8 L7 Intro to Solids and Surface Area.notebook DO NOW! Name as many of the 3D Figures as you can! Identify prisms, pyramids, cones & cylinders Cross Sections Intro to 3Dimensional Solids

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Page 1: Intro to 3Dimensional Solids Identify prisms, pyramids ...€¦ · U8 L7 Intro to Solids and Surface Area.notebook These 3 are prisms Cylinder Cone Pyramid 3D Shapes a) How many vertices

U8 L7 Intro to Solids and Surface Area.notebook

DO NOW!Name as many of the 3­D Figures as you can!

• Identify prisms, pyramids, cones & cylinders• Cross Sections

Intro to 3­Dimensional Solids

Page 2: Intro to 3Dimensional Solids Identify prisms, pyramids ...€¦ · U8 L7 Intro to Solids and Surface Area.notebook These 3 are prisms Cylinder Cone Pyramid 3D Shapes a) How many vertices

U8 L7 Intro to Solids and Surface Area.notebook

These 3 are prisms

Cone PyramidCylinder

3­D Shapes

a)  How many vertices are there in the polyhedron to the right?      List them.

b) How may edges are there?  List them.

c) How may faces are there?  List them.

Page 3: Intro to 3Dimensional Solids Identify prisms, pyramids ...€¦ · U8 L7 Intro to Solids and Surface Area.notebook These 3 are prisms Cylinder Cone Pyramid 3D Shapes a) How many vertices

U8 L7 Intro to Solids and Surface Area.notebook

Definitions: A prism a polyhedron with exactly 2   , parallel faces, called bases. Other faces are called lateral faces.

A prism is named by the shape of its bases.  Name the prisms below.  

An altitude of a prism is a perpendicular segment that joins the planes of the bases.  The height is the length of the altitude.  

(Not aligned properly)

Page 4: Intro to 3Dimensional Solids Identify prisms, pyramids ...€¦ · U8 L7 Intro to Solids and Surface Area.notebook These 3 are prisms Cylinder Cone Pyramid 3D Shapes a) How many vertices

U8 L7 Intro to Solids and Surface Area.notebook

The surface area is found by adding the areas of each all faces.  

Triangular Prism and its net.

A net is a two­dimensional pattern of a three­dimensional figure that can be folded to form the figure. 

What is this a net of?

Page 5: Intro to 3Dimensional Solids Identify prisms, pyramids ...€¦ · U8 L7 Intro to Solids and Surface Area.notebook These 3 are prisms Cylinder Cone Pyramid 3D Shapes a) How many vertices

U8 L7 Intro to Solids and Surface Area.notebook

You may want to use a net.

Find the Surface Area for the following triangular prism

Page 6: Intro to 3Dimensional Solids Identify prisms, pyramids ...€¦ · U8 L7 Intro to Solids and Surface Area.notebook These 3 are prisms Cylinder Cone Pyramid 3D Shapes a) How many vertices

U8 L7 Intro to Solids and Surface Area.notebook

Find the surface area. 

Page 7: Intro to 3Dimensional Solids Identify prisms, pyramids ...€¦ · U8 L7 Intro to Solids and Surface Area.notebook These 3 are prisms Cylinder Cone Pyramid 3D Shapes a) How many vertices

U8 L7 Intro to Solids and Surface Area.notebook

Surface Area and Lateral Area of Cylinders

Link for "unrolling"

To find the area of the curved surface of a cylinder, imagine "unrolling"it.  

 The surface area of the cylinder is the sum of the area of the rectangle & the area of the 2 circular bases. 

Surface Area of a Cylinder

SA = 2πrh+(πr2) x 2

Area of rectangle

A = (2πr)(h)

Page 8: Intro to 3Dimensional Solids Identify prisms, pyramids ...€¦ · U8 L7 Intro to Solids and Surface Area.notebook These 3 are prisms Cylinder Cone Pyramid 3D Shapes a) How many vertices

U8 L7 Intro to Solids and Surface Area.notebook

The radius of the base of cylinder is 4 in. & its height is 6 in.  Find the surface area of the cylinder in terms of π.

Find the surface area of a cylinder with height 10cm and radius 10 cm in terms of π.

Do NOW!

Homework 

U6 L7 Surface Area

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