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Triangles Are a Symbol Of Strength!

What shapes do you see in the structures below?  

 

bridge girders
Epcot
tree fort
El Castillo pyramid
Egyptian pyramid
traffic cone
Louvre
Eiffel Tower
Petronas Towers
Watts Towers

 

 

Did you notice the triangle shape?  Why do you think this shape is used often?  Why do you think people like to build things that are larger at the bottom and smaller at the top?  

© Jeri Faber 2016

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