= 4 cm + 4 cm + 4 cm = 12 cm. A square and an equilateral triangle are both examples of regular polygons. Another method for finding the perimeter of a regular polygon is to multiply the number of sides by the length of one side. Let's revisit Examples 3 and 4 using this second method.
Cranial vault expansion is a surgery to correct and reduce the risk of future craniofacial deformities caused by a condition called pediatric craniostenosis. Pediatric craniosynstenosis is the name of a condition where pediatric sutures, which are bony plates in an infantâs head, fuse together too early.
The Cloisters, New York City. A barrel vault, also known as a tunnel vault or a wagon vault, is an architectural element formed by the extrusion of a single curve (or pair of curves, in the case of a pointed barrel vault) along a given distance.The curves are typically circular in shape, lending a semi-cylindrical appearance to the total design.he barrel vault is the simplest form of a vault: effectively a series of arches placed side by side, i.e., one after another. It is a form of barrel roof.