What is right-angled; having one or more angles of ninety degrees. -- Rec*tan"gu*lar*ly (r, adv. -- Rec*tan"gu*lar*ness, n called?

rectangular — Right-angled; having one or more angles of ninety degrees. -- Rec*tan"gu*lar*ly (r, adv. -- Rec*tan"gu*lar*ness, n. (Webster's 1913.)

Sources