There are five common silicon-oxygen tetrahedra links:
-Madgirl126
equilateral triangles-Apex ;)
tetrahedron, cube, octahedron, dodecahedron and icosahedron.
Organs are formed when multiple tissues combine. The study of tissue is known as histology. Multiple tissue types compose organs and body structures.
There are three types of index data structures: unique, non-unique, bitmap
the types of internetworks is internet and networks combine
Some structures are combinations of different types of structures:- Football helmets are shell structures - to protect the head, with a frame structure attached in front - to protect the face.- Hydro-electric dams are mass structures, with frame structures inside to house the generators- Airplanes are frame structures, with a 'skin' that acts like a shell - giving it the added strength to resist stresses and making it lightweight and flexible.- Domed buildings combine shell and frame construction- Warehouses are often built with columns to support the roof (frame) and concrete blocks, (mass structures) which stay in place because of their weight.
Triangle (tetrahedron, octahedron, icosahedron) Square (cube) Pentagon (dodecahedron)
BeamsFramesTrussesArches
multi cellular
Igloo
Two examples of large structures constructed by the ancient Egyptians are pyramids and obelisks.
There are broadly three main types of fold structure:SynclinesAnticlinesMonoclinesFor more information on these structures please see the related link.