Transcript Three –Dimensional Figures

Three–Dimensional
Figures
Today you will learn to:
• identify and classify three-dimensional figures
•describe plane sections of right rectangular prisms and right
rectangular pyramids.
M07.C-G.1.1.4: Describe the two-dimensional figures that result from
slicing three-dimensional figures.
What are three-dimensional figures?
•
A three-dimensional figure
is an object that has length,
width, and height, which
means that it can be
measured in three
directions.
•
A three-dimensional figure
encloses a part of space; in
other words it can hold
something (water, air, etc.)
Features of a ThreeDimensional Figure
•Face- the flat surface of a
figure
Edge
•Edge- formed by two faces
of a 3-D figure sharing a side
•Vertex (plural: vertices)- the
point at which three or more
edges meet
Faces
Vertex
Two main types of ThreeDimensional Figures
Prism:
Pyramid:
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Has at least three faces
that are rectangles
Has two congruent faces
on the top and bottom
called bases
The shape of the base
tells what type of prism
the figure is
Rectangular Prism
•
•
Has at least three faces
that are triangles
Has only one base
The shape of the base
tells what type of
pyramid the figure is
Rectangular Pyramid
Triangular Pyramid
Plane Intersections
Rectangular Prism
Rectangular Pyramid