Obtuse angle

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees. It’s larger than a right angle (which is exactly 90 degrees) but smaller than a straight line (which is 180 degrees). Imagine opening a door so that it’s not quite fully open but wider than just a small crack—that’s similar to an obtuse angle. These angles are common in various shapes and structures, providing a sense of openness or wide turns in design and geometry.