In an equilateral triangle, all three sides are congruent. You can label each side with the same variable or symbol to denote that they are equal in length. For example, you can label all three sides as a , indicating that all three sides have the same length.
Therefore, in an equilateral triangle, label each side with the same variable or symbol to represent that they are equal in length.
\textbf{Answer:} Each side of an equilateral triangle can be labeled with the same variable or symbol, such as a .