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 quarter turn (90°). To show an angle is a right angle ...

many of these things we have only seen from one side. Check out this cool collection of things you have probably seen before, but never from these angles.

Essentially, these angles give you insight into whether or not you're going to lose traction or scrape your SUV's bumpers when off-roading. Approach angles are measured by drawing a straight ...