Презентация на тему Pyramids; The Lateral Area of a Regular Pyramid (11th grade)

such as ΔVAB, are lateral faces. These faces intersect

The height of a lateral face is called the slant height, l of the pyramid.

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regular pyramids.
All lateral faces are congruent isosceles triangles.

These are pyramids with the following properties:
The base is a regular polygon

All lateral edges are congruent

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10 and lateral edges 13. Find its
slant height
height.

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given in Example 1.
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The lateral area of a regular pyramid with n

(the area of one lateral face x n)

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pyramid equals one third the area of the base

base edges 6 and height 12. Find its volume.

10 and height 6. Find the
(a) lateral area

cut from a rectangular solid. How does the volume