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Section 12-1 Prisms
Prism a 3-dimensional figure with two congruent, parallel faces The congruent, parallel faces are called the bases. The bases lie in parallel planes.
Altitude of a prism a segment joining the two base planes; it is perpendicular to both planes The length of the altitude is the height of the prism!
the faces that are not its bases In the shape of parallelograms Lateral faces of a prism
the parallel segments where adjacent lateral faces intersect Lateral Edges
Types of prisms 1.Right Prism: –h–have rectangles for the lateral faces –L–Lateral edges are altitudes 2.Oblique prism: –L–Lateral edges are NOT altitudes
Example of a Right Prism: Example of an Oblique Prism: Height
A prism is named by the shape of its base.
Some Examples of Right Prisms: Rectangular Prism: Base
If the edges have equal length then the rectangular prism is called a cube.
Triangular Prism: : Pentagonal Prism Base
Hexagonal Prism: And the list goes on….. Base
Lateral area The sum of the areas of the lateral faces
Theorem 12-1 The lateral area of a right prism equals the perimeter of a base times the height of the prism. L.A. = Ph
Total Area The sum of the areas of all its faces T.A. = L.A. + Total Area Lateral Area # of Bases Area of a Base
volume The number of cubic units enclosed by a three dimensional object. Therefore volume is measured in cubic units.
Theorem 12-2 The volume of a right prism equals the area of a base times the height of the prism.
Chapter 12 – Surface Area and Volume of Solids
Surface Area of Prisms & Cylinders Geometry Mr. Westlove Summer 2009.
11.2 Surface Areas of Prisms and Cylinders
OBJECTIVES: 1) TO FIND THE SURFACE AREA OF A PRISM. 2) TO FIND THE SURFACE AREA OF A CYLINDER. PDN: PG. 528 # Surface Area of Prisms and Cylinders.
Chapter 12. Section 12-1 Also called solids Enclose part of space.
Honors Geometry Sections 6.3 & 7.2 Surface Area and Volume of Prisms
Three-Dimensional Figure A three-dimensional figure is a shape whose points do not all lie in the same plane.
12-2 Surface Area of Prisms You found areas of polygons. Find lateral areas and surface areas of prisms. Find lateral areas and surface areas of cylinders.
INTRODUCTION: A polyhedron is a geometric figure made up of a finite number of polygons that are joined by pairs along their sides and that enclose a.
Geometric Solids: The Prism. 2 Review of Planes A plane is a flat surface (think tabletop) that extends forever in all directions. It is a two-dimensional.
Surface Area and Volume
Ch 11-4 Surface Area of A Prism C. N. Colón St. Barnabas HS Geometry.
Chapter 12 Notes.
Prisms Fun with by D. Fisher
Prisms Prism – Every prism has two congruent faces which are polygonal regions and lie in parallel planes. These polygonal regions are called bases.
11.3 Surface Area of Prisms & Cylinders Geometry.
Chapter 12 Notes: Surface Area and Volume of Prisms Goal: Students will find the surface area and volume of prisms.
Chapter 10: Surface Area and Volume
Chapter 11: Surface Area & Volume
CHAPTER 12 AREAS AND VOLUMES OF SOLIDS 12-1 PRISMS.
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