Number added to a code (such as a bar code or account number) to derive a further number as a means of verifying the accuracy or validity of the code as it is printed or transmitted.
An equilateral triangle has the following properties. 1  Equilateral triangles have three equal side lengths. 2  Equilateral triangles also have three equal angles of 60 degrees. 3  They also have three equal altitudes.  Is the height of an equilateral triangle equal to its side 1  length. The height is equal to side/2 x  â3.
Length, height, perimeter and radius have the same unit (e.g. meter), the area has this unit squared (e.g. square meter). Anzeige. Heights, bisecting lines, median lines, perpendicular bisectors and symmetry axes coincide. To these, the equilateral triangle is axially symmetric. They meet with centroid, circumcircle and incircle center in one point. To this, the equilateral triangle is rotationally symmetric at a rotation of 120Â°or multiples of this.