прямоугольный bedeutet auf Englisch

orthogonal▼(of right angles)
adjective
[UK: ɔː.ˈθɒ.ɡən.l̩] [US: ɔːr.ˈθɒ.ɡən.l̩]

rectangular▼(having a shape like a rectangle)
adjective
[UK: rek.ˈtæŋ.ɡjʊ.lə(r)] [US: rek.ˈtæŋ.ɡjə.lər]

right-angled▼(having a right angle)
adjective
[UK: ˈraɪt æŋ.ɡl̩d] [US: ˈraɪt æŋ.ɡl̩d]

square [squarer, squarest]▼(forming a right angle)
adjective
[UK: skweə(r)] [US: ˈskwer]

right triangle▼(a triangle having a right angle as one of its interior angles)
noun
[UK: raɪt ˈtraɪæŋ.ɡl̩] [US: ˈraɪt ˈtraˌjæŋ.ɡl̩]