ˌright-angled ˈtriangle BrE AmE noun [countable] British English
a ↑ triangle which has an angle of 90° SYN right triangle American English
ˌright-angled ˈtriangle BrE AmE noun [countable] British English
a ↑ triangle which has an angle of 90° SYN right triangle American English
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012