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Topic: 3D Geometry
HF: 303
Level: Apply
Lesson: 9.2
Do:
Page: 364
Work with a formula to find the surface area of a pyramid.
Essential Question: How can you find the surface area of a pyramid?
Questions:
Notes:
A _________ pyramid is a pyramid whose base is
a regular polygon. The lateral faces are
___________. The _________ of each triangle is
the _______ ________ of the pyramid. The
surface area S of a pyramid is the _____ of the
area of the ______ and the ________ _______.
Questions:
Notes:
A) Find the Surface Area of a Square Pyramid
Find the surface area of a regular pyramid
Ex. 1)
Ex. 2) What is the surface area of a square
pyramid with a base side length of 9 mm and a
slant height of 7 mm?
The surface area or a triangular pyramid is the
sum of the area of the base (__________) and
the lateral faces.
Questions:
Notes:
Questions:
Notes:
B) Find the Surface Area of a Triangular Pyramid
Find the surface area of the regular pyramid
Ex. 3)
Ex. 4)
Summary:
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