angular

Angular, in mathematics and physics, refers to anything relating to angles. An angle measures the difference in direction between two rays sharing a common vertex. Angles are quantified in degrees or radians; one full circle is 360 degrees or 2π radians. Angular quantities describe rotation: angular distance between two directions, angular velocity (rate of change of angle), angular momentum (rotational analogue of linear momentum), and angular acceleration (rate of change of angular velocity). Angular measurements underpin trigonometry and polar coordinates, and are used to describe celestial positions, navigation, and mechanical systems. The angular size of an object is its apparent size on the sky, expressed as angle; distance and size can be inferred via angular measurements and parallax.

In computing, angular can refer to the web framework Angular, developed by Google. Angular is a platform and framework for building client applications in HTML, CSS, and TypeScript, designed for single-page applications. The project began as AngularJS (1.x), originally released in 2010, and was rewritten as Angular (2+), with ongoing releases under the Angular umbrella. Key features include a component-based architecture, a modular ecosystem, a ahead-of-time and just-in-time compilation, a reactive forms and RxJS integration, and the Angular CLI tooling. Angular emphasizes declarative templates, dependency injection, and strong typing through TypeScript. It is used for enterprise and consumer web applications and has a large ecosystem of libraries and resources.