There are four quadrangles. They are a rectangle, a parallelogram, a kite and an arrow.
(1) quadrilateral
English [? kw？ drl？ t？ r？ L] beauty [? kwa:drl？ t？ r？ l]
Four-sided
quadrilateral
(2) Rectangular English [? Rektgl] beauty [? r？ k？ tɡ？ l]
Rectangular shape
(3) parallelogram
English [? p？ Riel? gr？ M] beautiful [? p？ rl？ lɡr？ m]
Noun (abbreviation of noun)< number > parallelogram
(4) Arrow
English [rhed] beauty [ro? hed]
Arrow; Arrow rotation; Wedge symbol; & lt plants > arrow
(5) Outside English [pr? m？ t？ (r)] beauty [pr? m？ t？ ]
Noun (abbreviation of noun)< quantity > circumference; Circumstances, boundaries
Complex number: perimeter