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Slide 1
Slide 2
Nets Taking a deeper look. Click on the hyperlink below.
Slide 3
Over-viewing three dimensional objects.
Slide 4
4 Important parts Base Base Vertex/vertices Vertex/vertices
Edge Edge Face Face
Slide 5
Introducing the Face Face When you think of the face of a three
dimensional object, remember that it is similar to our faces. It is
the flat two- dimensional surfaces of a three dimensional
shape.
Slide 6
Introducing the Edge Edge The edges of a three dimensional
object can be remembered by looking at your class room. We are in
the center of a rectangular prism. The line segment where two walls
meet is called the Edge". Another way to say this is : An edge is a
line segment formed where two faces of a three-dimensional shape
meet.
Slide 7
Introducing the Vertex or Vertices (if there are more than
one). Vertex The vertex is the corner of a 3- dimensional shape.
When you speak of more than one we call them vertices!.
Slide 8
Introducing the Base Base When you are determining the base of
a three dimensional object just remember it is the bottom face
bottom facebottom face
Slide 9
Now that we know the four parts, lets say them out loud! Base
Face Vertex Edge Math net Math net Math net
Slide 10
Table A for the chance to win 100 points!!!!! What is a flat
two-surface of a three- dimensional shape? Can you point to it
using your shape on the table? FACE How many faces are on your
shape?
Slide 11
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?
Slide 12
Table C for the chance to win 100 points!! What is the bottom
face of a three- dimensional object? BASE
Slide 13
Table D for the chance to win 100 points!!! LLLLooking at the
picture below, where is/are the vertex/vertices located? GGGGot it
cornered? Get it! Vertex ---corner! Vertices--Corners
Slide 14
Taking a deeper look Now that weve had a chance to see the
different parts of three dimensional objects. Lets take a look at a
few types of three- dimensional shapes. Cube Cube Rectangular Prism
Rectangular Prism Rectangular Prism Cylinder Cylinder Pyramid
Pyramid Cone Cone
Slide 15
Cube The cube is a three-dimensional shape with six identical
square faces. Can you identify its parts? Face, Base, Edge,
Vertex
Slide 16
Prism A three-dimensional shape with a top and bottom (base)
that are congruent polygons and lateral faces that are
parallelograms.
Slide 17
Rectangular Prism A prism with a top and bottom (base) that are
congruent rectangles.
Slide 18
Table E for the chance to win 100 points!!! What is the
difference between a rectangular prism and a cube? The cube is a
three-dimensional shape with six identical square faces. A
rectangular prism is a prism with a top and bottom (base) that are
congruent rectangles.
Slide 19
Cylinder 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.
Slide 20
Cylinder So what does that mean? Take two circles, and a
rectangle (like your notebook paper). Roll the rectangle and place
the two circles one on each end and you have just formed a
cylinder.
Slide 21
Pyramid A pyramid is a three-dimensional shape with one
polygonal base and lateral sides that are all triangles that meet
at the vertex opposite the base. Say what?!? Its the same as the
pyramids in Egypt but we can change the base to different
polygons!
Slide 22
Cone A three-dimensional shape with a circular base and a
vertex opposite the base. V e r t e x C i r c u l a r b a s e
Slide 23
Table F for the chance to win 100 points!!! What is the
difference between a cone and a cylinder? A cylinder 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 cone is a
three-dimensional shape with a circular base and a vertex opposite
the base
Slide 24
Surface Area The surface area of a space figure is the total
area of all the faces of the figure.
Slide 25
For the chance to win 100 pointsall 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
Slide 26
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. Its all
about what the shape can hold.
Slide 27
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.
Slide 28
Terms to remember (repeat after me) Face Base Vertex/Vertices
Edge Cube Rectangular Prism Cylinder Pyramid Cone Surface Area
Volume
Slide 29
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