
Cross Section Lesson
Presentation
•
Mathematics
•
7th Grade
•
Medium
+1
Standards-aligned
Shasta L Long
Used 718+ times
FREE Resource
5 Slides • 36 Questions
1
Cross Sections
2
What is a cross section?
a surface or shape that is or would be exposed by making a straight cut through something
3
Identifying the base and faces...
On 3-D shapes, you have a base(s) and faces.
Pyramids & cones have 1 base.
Prisms & cylinders have 2 identical bases.
The number of faces depends on the number of sides the base(s) have.
On all pyramids, the faces will always be triangles.
On all prisms, the faces will always be rectangles.
On both a pyramid & a prism, the base is the first name of the shape:
"triangular" prism "square" pyramid
4
Multiple Choice
How many bases do pyramids have?
1
2
5
Multiple Choice
How many bases do prisms have?
1
2
6
Multiple Choice
What is the face shape of all pyramids?
triangle
circle
rectangle
octagon
7
Multiple Choice
What is the face shape of all prisms?
triangle
circle
rectangle
octagon
8
Multiple Choice
How many and what kind of faces does a square pyramid have?
4 square faces
4 triangle faces
3 triangle faces
3 square faces
9
Multiple Choice
How many and what kind of faces does a pentagonal pyramid have?
4 square faces
4 triangle faces
5 triangle faces
5 square faces
10
Multiple Choice
How many and what kind of faces does a triangular prism have?
3 rectangle faces
3 triangle faces
4 triangle faces
4 rectangle faces
11
Multiple Choice
What is the base shape of a triangular pyramid?
triangle
circle
rectangle
octagon
12
Multiple Choice
What is the base shape of a square prism?
triangle
square
rectangle
octagon
13
Multiple Choice
What is the base shape of a octagonal prism?
triangle
square
rectangle
octagon
14
Multiple Choice
What is the base shape of a square pyramid?
triangle
square
rectangle
octagon
15
Multiple Choice
What is the base shape of a cylinder?
circle
square
rectangle
octagon
16
If the cut is parallel to the base, the resulting cross section will be the same shape as the base.
The shapes to the right are all being cut parallel to the base.
Parallel to the Base
Direction of the Cross Section
17
If the cut is perpendicular to the base, the resulting cross section will be the same shape as the face.
The shapes to the left are all being cut perpendicular to the base(s).
This rules applies when the cut is from base to base or from apex to base.
Perpendicular to the Base
Direction of the Cross Section
18
Multiple Choice
Cutting a 3-D shape perpendicular to its base will result in the _____ shape.
base
face
19
Multiple Choice
Cutting a 3-D shape parallel to its base will result in the _____ shape.
base
face
20
Multiple Choice
What best describes the two-dimensional shape created when a cylinder is cut parallel to its bases?
square
rectangle
circle
triangle
21
Multiple Choice
What best describes the two-dimensional shape created when a triangular prism is cut parallel to its bases?
square
rectangle
circle
triangle
22
Multiple Choice
What best describes the two-dimensional shape created when a triangular prism is cut perpendicular to its bases?
square
rectangle
circle
triangle
23
Multiple Choice
What best describes the two-dimensional shape created when a square pyramid is cut parallel to its base?
square
rectangle
circle
triangle
24
Multiple Choice
What best describes the two-dimensional shape created when a square pyramid is cut perpendicular to its base?
square
rectangle
circle
triangle
25
Multiple Choice
Which best describes the two dimensional shape created when an octagonal pyramid is cut from its apex to its base (from top to bottom)?
triangle
circle
octagon
square
26
Multiple Choice
What's the name of this shape?
cylinder
cone
tube
Jessie
27
Multiple Choice
What's the name of this shape?
cone
cylinder
sphere
Michael
28
Multiple Choice
Sandy
29
Multiple Choice
Name the figure.
Bobby
30
Multiple Choice
31
Multiple Choice
32
Multiple Choice
What shape will your get if you cut a cylinder perpendicular to its bases?
33
Multiple Choice
What shape will the vertical cross section of a cube be?
34
Multiple Choice
35
Multiple Choice
Describe the cross section.
triangle
rectangle
trapezoid
square
36
Multiple Choice
37
Multiple Choice
38
Multiple Choice
A plane intersects a hexagonal prism. The plane is parallel to the base of the prism. Which two-dimensional figure is the cross section of the plane intersecting the prism?
triangle
trapezoid
hexagon
rectangle
39
Multiple Choice
Which figure can have the same cross section as a sphere?
40
Multiple Choice
Select the type of cross section formed when a triangular prism is cut perpendicular to its base.
triangle
rectangle
pentagon
trapezoid
41
Multiple Choice
A solid is cut by a plane that is perpendicular to its base, forming a two-dimensional cross section in the shape of a rectangle. Which of the following solids could have resulted in that cross section?
rectangular pyramid
sphere
right hexagonal prism
right cone
Cross Sections
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