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3-Dimensional Shapes. What is a 3 D shape?. A 3 D shape has a length, width and height. A shape that has thickness. 3-D Vocabulary. 2 faces congruent and parallel.
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What is a 3 D shape? • A 3 D shape has a length, width and height. A shape that has thickness.
3-D Vocabulary 2 faces congruent and parallel • Prism - a 3-d 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. • Pyramid - a 3-d shape with one face that is a polygon which is called the base. All other faces are triangles that meet at a vertex (point) Prism Base Pyramid
3-Dimensional Vocabulary • Face – a side of a 3-dimensional figure • Edge – where 2 faces meet • Vertex – where 2 edges meet
Cube • Find the cube • How many faces does it have? • How many edges? • How many vertices? • What are examples of cubes in our real world?
Rectangular Prism • Find a rectangular prism. • How many faces does it have? • How many edges? • How many vertices? • What are examples of rectangular prisms in our real world?
Can a cube also be a rectangular prism? Remember squares are also rectangles.
Triangular Prism • Find the triangular prism. • How many faces does it have? • How many edges? • How many vertices? • What are examples of triangular prisms in our real world?
Square Pyramid • Find the square pyramid. • How many faces does it have? • How many edges? • How many vertices? • What are examples of square pyramids in our real world? • Draw a square pyramid on your paper.
Cylinder • Find the cylinder • How many faces does it have? • How many edges? • How many vertices? • What are examples of cylinders in our real world?
Visit the following websiteand draw the following 3 D nets. • http://www.learner.org/interactives/geometry/3d_prisms.html • Draw the net of a Triangular Prism • Rectangle Prism (cube) http://www.learner.org/interactives/geometry/3d_pyramids.html Draw a Rectangle (Square Pyramid)
Extension Activity • Click on the link below and check out other 3 dimensional shapes. • Read the directions and investigate: faces, edges and vertices • http://nlvm.usu.edu/en/nav/frames_asid_128_g_3_t_3.html?open=instructions