"Obtusity" Natural Recordings by Native Speakers
Obtusity refers to the state of being obtuse, which means being dull-witted, thick-skinned, or unsophisticated. It can also describe something that is difficult to understand, complex, or obscure. Obtusity can also imply a lack of sharpness or acuteness of mind, often humorously or affectionately.
Obtuse-angled refers to a shape or figure with an angle that is greater than 90 degrees but less than 180 degrees. In other words, it is an angle that is almost, but not quite, a straight line. The term is often used to describe the shape of certain objects, such as buildings or furniture, or to describe the angle at which two lines or surfaces meet.