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A small minority of people have four [[finger]]s on each [[hand]] and four [[toes]] on each [[foot]].{{Citation needed|date=December 2022}} Four squared is 16, and four doubled is 8.

A small minority of people have four [[finger]]s on each [[hand]] and four [[toes]] on each [[foot]].{{Citation needed|date=December 2022}} Four squared is 16, and four doubled is 8.

In [[geometry]], [[Quadrilateral|quadrilaterals]] or tetragons are a kind of [[Shape|shapes]] called [[Polygon|polygons]] have four [[Side|sides]] and [[vertices]], to which [[Square|squares]] are quadrilaterals with sides of same length and vertices of the same wideness.

In [[geometry]], [[quadrilateral]]s or tetragons are a kind of [[shape]]s called [[polygon]]s have four [[side]]s and [[vertices]], to which [[square]]s are quadrilaterals with sides of same length and vertices of the same wideness.