| A | B |
|---|
| dome | used for open space; must be reinforced with buttresses |
| arch | used for doorways and windows; force is spread to bottom |
| rectangle | weak when force applied, can be reinforced with braces |
| triangle | strongest shape on its points |
| brace | makes a triangle shape inside of a rectangle shape |
| buttress | added to the outside of structures to make it stable |
| cantilever | beam supported only at one end |
| base | needs to be strong, stable and wide to support a structure |
| deformation | when a structure bends or weakens under force |
| beam | horizontal piece of a structure |
| column | strong on top, weak on sides; vertical piece |
| corrugation | series of triangles working together |
