triunghiului

Triunghiului, meaning "triangle" in Romanian, refers to the geometric shape. A triangle is a polygon with three edges and three vertices. It is one of the fundamental shapes in geometry. The sum of the interior angles of any triangle is always 180 degrees. Triangles can be classified based on their side lengths and angles.

By side lengths, triangles are categorized as equilateral (all sides equal), isosceles (two sides equal), and scalene (no sides equal). By angles, they can be acute (all angles less than 90 degrees), obtuse (one angle greater than 90 degrees), or right-angled (one angle exactly 90 degrees). The area of a triangle can be calculated using various formulas, most commonly half the base multiplied by the height. Triangles are ubiquitous in geometry, architecture, engineering, and art, serving as building blocks for more complex shapes and structures. The study of triangles is known as trigonometry.