Parts of Prisms Bases - the two parallel and congruent polygons of a prism. Lateral Edges - the parallel edges joining the vertices of the bases. Lateral Faces - the faces that are NOT bases. Lateral faces are parallelograms. We name prisms by their BASES. Lateral edge
Definitions The lateral surface area of a prism is the sum of the areas of the lateral faces. The total surface area of a prism is the sum of the prism’s lateral area and the areas of the two bases.
Example Given the right triangular prism shown Find a. the lateral area (L.A.) b. the total area (T.A.) 20 14 13 12 15
Summary A cube is a rectangular prism in which each face is a square. What is the total surface area of a cube in which each edge has a measure of 5? What is the total surface area of a cube in which each edge has a measure of 7? What would the generalization be if the edges were twice as great as what was given? Homework: worksheet