+ Cross Sections SWBAT: Describe the two-dimensional figures that result from slicing...
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+ Cross Section SWBAT: Describe the two-dimensional figures that result from slicing three-dimensional figures with a plane.
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Transcript of + Cross Sections SWBAT: Describe the two-dimensional figures that result from slicing...
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Cross Sections
SWBAT: Describe the two-dimensional figures that result from slicing three-dimensional figures with a plane.
+ In a prism, and at times in cylinders the shape is made by stacking several figures on top of each other that are ________________ .
If you stacked the same shape as the base, except that it is a little smaller each time until they reached a point at the top, you will create what is known as a______________.
These pyramids are named according to the shape of their_________________
When we think of pyramids we think of the Great Pyramids of Egypt. They are actually Square Pyramids, because their base is a Square.
Similar
Base
Pyramid
+Prisms:-A prism has two bases that are congruent to each other.- The two bases in a prism, are parallel to each other.
Pyramids:-A pyramid has triangular sides (lateral faces), and either a rectangular or triangular base.-A Pyramid has one base, and is made of shapes similar to the base, that get progressively smaller until they come to a point called a vertex/apex.
+
A slice of any 3 dimensional figure with a plane creates a __________Cross sections are either taken ______________ or ____________ to the base, but they can also be taken at a_____________.
Cross Sections
Cross Section
Parallel Perpendicular
Diagonal
+Types of Cross Sections:If a shape is cut parallel to the base,
then the cross section looks just like the base.
If a shape is cut perpendicular to the base, then the cross section looks just like the lateral face.
If the shape is cut diagonally, the cross section looks like a stretched out base.
+
+Parallel Cross Section
Same Shape as the base
base base
Cross Section Cross Section
+Perpendicular Cross Section
Same shape as lateral face
+Cross Sections of a Cylinder:
Parallel cut Perpendicular cut
+Cross Section of a Rectangular Pyramid
+Cross Section of a Triangular Prism
+Cross Section of a Hexagonal/Pentagonal Prism
+Cross Sections of a Cone
+Cross Sections of a Sphere
+Other Cross Sections:
+Shape Vertical Cross
Section Horizontal Cross Section
Diagonal Cross Section
Draw the 2-D Cross section for each 3-D Figure
+Shape Vertical Cross Section
Horizontal Cross Section
Diagonal Cross Section
