angolo

Angolo is the Italian term for both angle and corner. In everyday language it is used to describe the point where two lines or surfaces meet, such as the corner of a room, a street corner, or the junction of two objects. In mathematics and geometry, angolo denotes a measure of rotation between two rays sharing a common endpoint, called the vertex.

In Euclidean geometry, an angle is defined by two rays that originate from the same point. The size of an angle is quantified in degrees or radians. Angles are categorized by their measure: acute angles are less than 90 degrees, right angles are exactly 90 degrees, obtuse angles are between 90 and 180 degrees, straight angles are 180 degrees, and reflex angles exceed 180 degrees up to 360 degrees.

Angles have several standard relationships. Complementary angles sum to 90 degrees, while supplementary angles sum to 180 degrees. An angle bisector divides an angle into two equal parts. The total measure of angles around a point is 360 degrees.

Measurement tools include the protractor, which scales in degrees, and conversions between degrees and radians (one degree equals pi/180 radians). Angles also appear in applied contexts such as architecture, where the angolo of a corner affects structure and space, and in optics and photography, where angle of view describes how much a scene is captured by a lens. In physics, angular quantities like angular velocity and angular momentum describe rotational motion.

Etymology: angolo derives from Latin angulus, meaning corner or angle, and has cognates in other Romance languages. The term is widely used across disciplines to denote either a geometric angle or a corner in space.