6th Grade Intro to Ntes

3-D Shapes

An Introduction to Surface Area. (A copy of this document is available for you in the HUB)

Parts of a 3D figure

• Faces: flat sides

• Edges: lines in between 2 faces

• Vertices: corners or points where edges connect

Multiple Choice

How many faces?

• 2
• 4
• 6
• 8

Multiple Choice

The corners or points on a 3D object are called...

• outlines
• cylinder
• lines
• vertices

We're going to look at 2 shapes:

Prisms and Pyramids

Prisms:

• TWO parallel bases

• Rectangular faces

• Names come from the bases

• Example: The triangular prism has two triangle bases

Multiple Choice

A prism gets its name from its

• faces

• bases

Multiple Choice

The base of a triangular prism is a

• square

• triangle

• rectangle

Pyramids:

• 1 base

• Triangular faces

• Names come from the bases

• Example: The square pyramid has one square base

Multiple Choice

Both prisms and pyramids are named for their

• vertices

• edges

• base(s)

• faces

Multiple Choice

A pyramid has _______ base(s).

• 1

• 2

Multiple Choice

The base of a square pyramid is a

• square

• triangle

• hexagon

Nets

• Nets are the unfolded version of a 3d figure.

• A net shows you all the different faces and base(s)

• We can use nets to help us calculate surface area

Multiple Choice

This is a net of what shape?

• Cube

• Rectangular Prism

• Triangular Prism

• Square Pyramid

Multiple Choice

Which figure will this net make?

• Rectangular Prism 
• Triangular Prism
• Triangular Pyramid 
• Cube

Multiple Choice

Which figure will this net make?

• Rectangular Prism 
• Triangular Prism
• Triangular Pyramid 
• Cube

Multiple Choice

Which figure will this net make?

• Cone
• Triangular Prism
• Square Pyramid 
• Cube

Multiple Choice

Which figure will this net make?

• Triangular Pyramid
• Hexagonal Pyramid
• Octagonal Pyramid 
• Cube

Multiple Choice

Which net will make square pyramid?

• Net A

• Net B

Multiple Choice

What is a net?

• A flattened three-dimensional figure

• A two-dimensional shape

• The formula for volume

• The formula for area

Total vs. Lateral

• Total Surface Area is the area of all the sides of the 3D figure, including the bases.

• Lateral Surface Area DOES NOT include the bases.