2. Look at the 3-D shapes in your classroom. Examine them carefully and fi ll in the grid below.


Cube Cuboid Cylinder Sphere Cone


Faces Vertices Edges


3-D Construction 3. Using Marla and matchsticks, make 3 different 3-D shapes. When you have fi nished, place your 3 models on an A4 page and label your shapes. Write down the name and the number of edges, vertices and faces of each shape.


Pyramids


A pyramid is a shape that has sloping sides that all meet at a point. Pyramids can have many different bases.


This is a square-based pyramid. It has 5 vertices, 8 edges and 5 faces. 4. What 2-D shape makes up the base of this pyramid?


This pyramid has four faces. 5.


Triangular prism


Pyramid


a) How many edges has this pyramid? b) How many vertices has this pyramid? c) What 2-D shape makes up the base of this pyramid?


d) What would you call this pyramid?


This pyramid has six faces. 6.


a) How many edges has this pyramid? b) How many vertices has this pyramid? c) What 2-D shape makes up the base of this pyramid?


d) What would you call this pyramid? 3-D Shapes 171


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