= 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 Global Seed Vault has been dubbed the âdoomsdayâ vault, which conjures up an image of a reserve of seeds for use in case of an apocalyptic event or a global catastrophe. But it is the much smaller, localized destruction and threats facing gene banks all over the world that the vault was designed to protect againstâand itâs why the vault was opened in February, when TIME visited.