Pocket Mathematics just received an update with new chapter: Angles - basic principles.

In planar geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint. Angles formed by two rays lie in a plane, but this plane does not have to be a Euclidean plane. Angles are also formed by the intersection of two planes in Euclidean and other spaces.

New chapter, Angles - basic principles, contains the following sections:

- Designation of angles
- Flat angle
- Degree measure of an angle
- Arc measure of an angle
- Grade measure of an angle
- Directed angle
- Multihedral angle

Pocket Mathematics is easy to use, free education app that covers most of the vital concepts, equations, and formulas of mathematics. This education application is a must-have guide, whether you want to refresh your knowledge, prepare for an exam, or just refresh the core concepts of mathematics. Current version of Pocket Mathematics contains over 15 chapters in two three, English, Spanish and Polish.

Pocket Mathematics for Android is available in the Google Play Store: