คำว่า ' diagonal ' ( N )
มีความหมายในภาษาไทยว่า เส้นทแยงมุม
คำนิยามในภาษาอังกฤษ (definition) :
[a.] Joining two not adjacent angles of a quadrilateral or multilateral figure; running across from corner to corner; crossing at an angle with one of the sides.
[n.] A right line drawn from one angle to another not adjacent, of a figure of four or more sides, and dividing it into two parts.
[n.] A member, in a framed structure, running obliquely across a panel.
[n.] A diagonal cloth; a kind of cloth having diagonal stripes, ridges, or welts made in the weaving.