"It's confusing, obtuse, esoteric, and strange," he wrote, adding that: "in other words, it's a Far Side cartoon." In a ...

A three-quarter turn is 270°. An acute angle is less than 90°. An obtuse angle is between 90° and 180°. A reflex angle is between 180° and 360°. These are all right angles as they are all a ...

It might look small and sharp, like the corner in a slice of pizza. An obtuse angle is between 90° and 180°. It’s wider than a right angle but not a straight line. It’s like when you open a ...