Write these two statements as a biconditional: If a triangle is equilateral then it is equangular and if a triangle is equiangular then it is equilateral.

If a triangle is equilateral, then it must also be equiangular and vice versa.

Step-by-step explanation:

A biconditional statement denotes that both a statement AND its reciprocal statement must be true.

Given the two statements:

If a triangle is equilateral, then it must also be equiangular

and

If a triangle is equiangular, then it must also be equilateral.

As both of these statements are always true, we can combine them into one biconditional statement (meaning two conditions are met)

If a triangle is equilateral, then it must also be equiangular and vice versa.