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.
Equilateral Triangle. An equilateral triangle is a triangle with all three sides of equal length , corresponding to what could also be known as a regular triangle. An equilateral triangle is therefore a special case of an isosceles triangle having not just two, but all three sides equal. An equilateral triangle also has three equal angles.