A right angle is an angle that measures exactly 90 degrees (°) or \( \frac{\pi}{2} \) radians. It is one of the fundamental angles in geometry and is typically represented by a small square at the vertex of the angle. Right angles are commonly encountered in various geometric shapes, such as squares and rectangles, where the corners form right angles.
Articles by others on the same topic
A right angle is an angle of radians; two nonzero vectors meet at a right angle exactly when their inner product is zero.