1. A prism is a polyhedron with two parallel faces called bases.
The other faces are always parallelograms. The prism is named by the shape of its base.
A polyhedron is simply a three-dimensional solid which consists of a collection of polygons usually joined at their edges.
Bases
Lateral Face
Lateral Edges
(altitudes)
Right Triangular Prism
Oblique Triangular Prism

2. T.A.(Total/Surface Area)
Right Rectangular Prism
12-1 Prisms
L.A.(Lateral Area)
= Ph
(perimeter x height)
=(14)(10)
=140u2 10 10 3 4 3 4 3
B (Area of a base)
=12u2
=lw
=(3)(4)
= varies 4 4 3
T.A.(Total/Surface Area) 4 4
=L.A. + 2B 3 3
=140u2 + 2(12u2)
V.(Volume)
= Bh
=120u3
=(12)(10)
=164u2

3. 1.) Find the Lateral Area, Total Area & Volume for this Right Triangular Prism.
LA= TA= V= 6 10 7

4. 2.) Find the Lateral Area, Total Area & Volume for this Right Hexagonal Prism. (Sides are 6 and height is 8)
LA= TA= V=

5. 3.) Given: cube with volume of 8 cm3.
Then the length of each edge is:
The total area of the cube is:

6. Then the height is: The total area is:
4.) Given: a right triangular prism having volume of 450 m3, & sides of 5, 12, & 13.
Then the height is:
The total area is:

7. 5.) If the base of a right triangular prism is isosceles right triangle with legs of 3” and a height of 10”, then what is the LA, TA, & V?

8. Section 12.1 Written Exercises (p. 478-480) #1-33 (odds)
Homework:
Section 12.1 Written Exercises
(p ) #1-33 (odds)