võrdkülgsel

võrdkülgsel is an Estonian term that translates to "equilateral" in English. It is primarily used in geometry to describe a shape that has all sides of equal length. The most common geometric figure referred to as võrdkülgsel is a võrdkülgne kolmnurk, which is an equilateral triangle. In an equilateral triangle, all three sides are congruent, and consequently, all three interior angles are also equal, each measuring 60 degrees.

The concept of võrdkülgsel extends beyond triangles. For example, a võrdkülgne nelinurk is a rhombus, a quadrilateral with all four sides of equal length. However, unlike an equilateral triangle, a rhombus does not necessarily have equal interior angles; only opposite angles are equal. A special case of a rhombus, where all angles are also equal, is a square, which is both equilateral and equiangular.

In broader terms, võrdkülgsel implies a uniformity or sameness in the linear dimensions of a figure's boundaries. This property is fundamental in various geometric proofs and constructions. Understanding what võrdkülgsel means is crucial for classifying and analyzing geometric shapes accurately.