This is the 10527th most frequent German word.
rechtecks
"Rechtecks" is the plural form of "Rechteck," meaning "rectangles" in English.
Here, 'Rechteck' is used as a noun referring to the geometric shape.
Das Rechteck hat vier Seiten.
The rectangle has four sides.
In this sentence, 'Rechtecks' is the genitive singular form showing possession.
Das Rechtecks Umfang beträgt 20 Zentimeter.
The rectangle's perimeter is 20 centimeters.
Here, 'Rechtecks' is a noun used in the context of learning and applying mathematical concepts.