如圖所示，圖形①經(jīng)過_______變化成圖形②，圖形②經(jīng)過______變化成圖形③, 圖形③經(jīng)過________變化成圖形④.

如圖所示，圖形①經(jīng)過_______變化成圖形②，圖形②經(jīng)過______變化成圖形③, 圖形③經(jīng)過________變化成圖形④.

如圖所示，圖形①經(jīng)過________變化成圖形②，圖形②經(jīng)過________變化成圖形③，圖形③經(jīng)過________變化成圖形④．