þríhyrningur

þríhyrningur is the Icelandic word for a triangle. It is a fundamental geometric shape in Euclidean geometry, consisting of three straight sides and three vertices. The sum of the internal angles of any þríhyrningur is always 180 degrees. þríhyrningur can be classified by the lengths of their sides and the measures of their angles. Classification by side length includes equilateral þríhyrningur (all sides equal), isosceles þríhyrningur (two sides equal), and scalene þríhyrningur (no sides equal). Classification by angle includes acute þríhyrningur (all angles less than 90 degrees), obtuse þríhyrningur (one angle greater than 90 degrees), and right þríhyrningur (one angle exactly 90 degrees). The area of a þríhyrningur can be calculated using various formulas, with the most common being half the product of its base and height. The study of þríhyrningur is known as trigonometry, which deals with the relationships between the sides and angles of triangles. þríhyrningur are ubiquitous in mathematics, physics, engineering, and art, serving as building blocks for more complex shapes and concepts.