1. Cross Sections
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2. Warm Up 𝟐𝟒𝟎𝟎 𝒊𝒏 𝟐 1). 2). 80 𝒊𝒏 𝟐 8 in 16 in 12 in 4 in 36 in 3). 4).
Find the surface area of each figure.
𝟐𝟒𝟎𝟎 𝒊𝒏 𝟐
1).
2).
80 𝒊𝒏 𝟐
8 in
16 in
12 in
4 in
36 in
3).
4).
𝒊𝒏 𝟐
470 𝒊𝒏 𝟐
7.5 in
18.5 in
13 in
5 in
12 in
10 in

3. Flippable

4. Cross Section
A cross section is the shape you get when you cut through a three dimensional object.
Cross Section

5. Three Types of Cuts Perpendicular to the base Parallel to the base
Angled Cut
1).
2).
3).

6. Perpendicular to the base
Figure
Perpendicular to the base
Parallel to the base
Angled
Cube
Rectangular Prism
Triangular Prism
Square Pyramid
Pentagonal Pyramid
Triangular Pyramid

7. Practice
Draw the cross section for each figure.

8. Closure
Draw a three dimensional figure and make a cut perpendicular to the base. Draw what the cross section would look like.