trokut

Trokut, also known as a triangle, is a fundamental geometric shape in Euclidean geometry. It is defined as a polygon with three edges and three vertices. The term "trokut" is derived from the Croatian language, where "tro" means three and "kut" means angle. In English, the term "triangle" is commonly used, which is derived from the Latin word "triangulum," meaning "three angles."

Triangles are classified based on their angles and sides. In terms of angles, triangles can be acute (all angles less than 90 degrees), right (one angle exactly 90 degrees), or obtuse (one angle greater than 90 degrees). Based on their sides, triangles can be equilateral (all sides equal), isosceles (two sides equal), or scalene (all sides different).

The sum of the interior angles of a triangle is always 180 degrees, a fact known as the triangle angle sum theorem. This theorem is fundamental in geometry and has numerous applications in various fields, including architecture, engineering, and physics.

Triangles are also significant in trigonometry, where they are used to define trigonometric functions such as sine, cosine, and tangent. These functions are essential in solving problems involving angles and distances, making triangles a crucial concept in mathematics and its applications.