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.
This part of the exercise requires our knowledge of the angles of equilateral triangles. As mentioned before, every angle has a measure of 60, so we have. We have already determined the value of x, so we can plug this value right into our equation to solve for y. Thus, we get x = 3 and y = 6.