Tyhmäkulmainen

Tyhmäkulmainen is a Finnish adjective that translates to "obtuse-angled" or "blunt-angled" in English. It is used to describe an angle that measures greater than 90 degrees but less than 180 degrees. In geometry, shapes can be classified based on their angles. A triangle, for example, can be acute-angled (all angles less than 90 degrees), right-angled (one angle exactly 90 degrees), or obtuse-angled (one angle greater than 90 degrees). Therefore, a tyhmäkulmainen kolmio would be an obtuse-angled triangle. The term is a straightforward compound word, with "tyhmä" meaning "stupid" or "dull" and "kulmainen" relating to "angle" or "corner." While "tyhmä" might seem like an unusual descriptor for an angle, it likely refers to the angle's "dullness" or lack of sharpness compared to acute angles. This term is primarily used in educational contexts when teaching geometry in Finnish.