Täisnurksel

Täisnurksel is an Estonian word that translates to "right-angled" or "rectangular" in English. It is primarily used as an adjective to describe geometric shapes that possess right angles.

The most common application of täisnurksel is in describing geometric figures. For example, a täisnurkne kolmnurk is a right-angled triangle, a triangle with one interior angle measuring exactly 90 degrees. Similarly, a täisnurkne ristkülik refers to a rectangle, a quadrilateral with four right angles. The term can also be extended to three-dimensional shapes, such as a täisnurkne prisma (right prism) or a täisnurkne parallelepiped (rectangular parallelepiped), which is also known as a cuboid.

In mathematics, the concept of a right angle is fundamental, and the term täisnurksel serves to identify objects with this specific characteristic. Understanding shapes described as täisnurksel is crucial in geometry for calculating areas, perimeters, and volumes, as well as for applying various theorems and formulas. The presence of right angles often simplifies calculations and provides a basis for further geometric analysis.