What is a 3 D shape u A

What is a 3 D shape? u. A 3 D shape has a length, width and height. A shape that has thickness.

u Prism - a 3 -dimensional shape with 2 faces that are congruent and parallel polygons. All other faces are rectangles. The name of the prism is based on the polygon faces. u Pyramid Prism - a 3 -dimensional shape with one face that is a polygon which is called the base. All other faces are triangles that meet at a vertex (point) Pyramid

3 -Dimensional Vocabulary u Face – a side of a 3 -dimensional figure u Edge – where 2 faces meet u Vertex – where 2 edges meet

u Find the cube u How many faces does it have? u How many edges? u How many vertices? u What are examples of cubes in our real world?

u Find a rectangular prism. u How many faces does it have? u How many edges? u How many vertices? u What are examples of rectangular prisms in our real world?

Can a cube also be a rectangular prism? Remember squares are also rectangles.

u Find the triangular prism. u How many faces does it have? u How many edges? u How many vertices? u What are examples of triangular prisms in our real world?

u Find the square pyramid. u How many faces does it have? u How many edges? u How many vertices? u What are examples of square pyramids in our real world? u Draw a square pyramid on your paper.

u Find the cylinder u How many faces does it have? u How many edges? u How many vertices? u What are examples of cylinders in our real world?

Visit the following website and draw the following 3 D nets. u http: //www. learner. org/interactives/geometry/3 d_prisms. h tml u Draw the net of a Triangular Prism Rectangle Prism (cube) u http: //www. learner. org/interactives/geometry/3 d_pyramids. h tml Draw a Rectangle (Square Pyramid)

Extension Activity u Click on the link below and check out other 3 dimensional shapes. u Read the directions and investigate: faces, edges and vertices u http: //nlvm. usu. edu/en/nav/frames_ asid_128_g_3_t_3. html? open=instru ctions