Triangles
a hammer
me
You can buy a bridge building game at Toys R Us. You can also buy them at various places online. Bridge building games can also be used in math concepts which can be found online.
When your building a bridge, you have to deal with questions like which materials should be used, how much force can be applied before the structure collapses, and how to construct a bridge with a greater ability to withstand wieght. --Stew Pidasole
Apart from bridge building, arches are commonly used for doorways/openings. Throughout history arches have been used to spread vertical loads to create openings. Examples range from small garden arches to the Colosseum.
First of all triangles are most probably the strongest shape and the suspension bridge has lots of triangles. Second of all it has posts next to the posts (attached to each other by steel rope) that makes a triangle shape. (it can be rounded too)
Yes it is floating. In Hindu scirptures, it states that Rama was building a bridge from India to Sri Lanka and to do so he used these rocks. These rocks are apart of a floating bridge. Adam's Bridge.
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The Sunshine Skyway Bridge is located in Florida and is built from concrete and steel. The longest span on the bridge is 1,200 feet.
It is made with metals and special tools that are used for that type of building.
Rectangular
a (usually) glass jar with a special shape used in chemistry labs.