Nets
Taking a deeper look. Click on the hyperlink below.
4 Important parts
Base
Vertex/vertices
Edge
Face
Now that we know the four parts, let’s say them out loud!
Base
Face
Vertex
Edge
Math net
Table A for the chance to win 100 points!!!!!
What is a flat two-surface of a threedimensional shape? Can you point to it using your shape on the table?
FACE
How many faces are on your shape?
Table B for the chance at
100 points!!!
What is a line segment formed where two faces of a three -dimensional shape meet?
An Edge
How many edges are on your shape?
Table C for the chance to win 100 points!!
What is the “bottom face” of a threedimensional object?
BASE
Table D for the chance to win 100 points!!!
Looking at the picture below, where is/are the vertex/vertices located?
Got it cornered? Get it!
Vertex ---corner!
Vertices
--Corners
Taking a deeper look
Now that we’ve had a chance to see the different parts of three dimensional objects.
Let’s take a look at a few types of threedimensional shapes.
Cube
Rectangular Prism
Cylinder
Pyramid
Cone
Table E for the chance to win 100 points!!!
What is the difference between a rectangular prism and a cube?
The
is a three-dimensional shape with six identical square faces.
A
is a prism with a top and bottom (base) that are congruent rectangles.
Table F for the chance to win 100 points!!!
What is the difference between a cone and a cylinder?
A
is a three-dimensional shape with two opposite faces that are congruent circles. The side (lateral surface) is a rectangle that is “wrapped around” the circular faces at the ends.
A
is a three-dimensional shape with a circular base and a vertex opposite the base
Surface Area
The surface area of a space figure is the total area of all the faces of the figure.
For the chance to win 100 points—all tables!!!
What is the surface area of a box whose length is 8, width is 3, and height is 4?
This box has 6 faces: two rectangular faces are 8 by 4, two rectangular faces are 4 by 3, and two rectangular faces are
8 by 3. Adding the areas of all these faces, we get the surface area of the box:
8 × 4 + 8 × 4 + 4 × 3 + 4 × 3 + 8 × 3 + 8 × 3 =
32 + 32 + 12 + 12 +24 + 24= 136
Volume
Volume is a measure of how much space a space figure takes up. Volume is used to measure a space figure just as area is used to measure a plane figure.
So what does that mean. It’s all about what the shape can hold.
For the chance to win 100 points– all teams!!!
What is the difference between surface area and volume?
Surface area- it the area of the faces of the three-dimensional object combined.
Volume is the space on the inside of the three-dimensional object.
Terms to remember
(repeat after me)
Face
Base
Vertex/Vertices
Edge
Cube
Rectangular Prism
Cylinder
Pyramid
Cone
Surface Area
Volume
Ticket out the door
How many faces can be found on a rectangular prism?
Homework
Ace p 10-17
1st period
# 15,16,26,28a,29
2nd period #16,26,28a,29a
3rd period
#16,26,28a,29a
4th period
#16,26,28a,29a