Keystone (architecture)
From Academic Kids
In architecture, a keystone is the stone at the top of an arch. It the supporting element for the entire arch— without it the arch would collapse.
[edit]
Keystone (architecture)From Academic KidsIn architecture, a keystone is the stone at the top of an arch. It the supporting element for the entire arch— without it the arch would collapse. [edit] See also |
Advertisement |