May 02, 2013
Word
Pyramid
Vocabulary
Section
Picture/Description
-1 base (polygon)
-lateral faces are triangles,
meeting at point (called vertex)
height = ⊥ distance
between vertex and
base
Naming:
__________ pyramid
shape of base
May 02, 2013
Word
Regular
Pyramid
Vocabulary
Section
Picture/Description
-1 base (a regular polygon)
-lateral faces are congruent
isosceles triangles, meeting at
point (called vertex)
= slant height,
height = ⊥ distance
between vertex and
base - goes through
center
height of lateral
face
Naming:
Regular __________ pyramid
shape of base
Ex 1: A square pyramid has a height of
15cm and a base edge length of 16cm.
Find the area of each lateral face of the
pyramid.
May 02, 2013
Ch 12 Formula Sheet
Shape
Pyramid
Surface Area
Formula
1
B + 2p
base
area
lateral
area
Picture & details to
remember
B = area of the base
p = perimeter of the
base
= slant height
Ex 2: Find the surface area of this
__________
6
4
6
May 02, 2013
Ex 3: Find the lateral area and surface area of
the regular hexagonal pyramid
Word
Cone
Vocabulary
Section
Picture/Description
1 base: circle
height = ⊥ distance
between vertex and
base
radius base = radius cone
lateral surface: everything except
the base
Right
Cone
height: goes through
center of base
not
right
May 02, 2013
Ch 12 Formula Sheet
Shape
Right Cone
Surface Area
Formula
r2 +
base
area
r
lateral
area
Picture & details to
remember
= slant height
r = radius
May 02, 2013