Could a triangle have side lengths of 1.2, 3.1, and 1.6

Step 1: Note down the given lengths
EXAMPLE: a = 1.2,
b = 1.6 and
c = 3.1
Step 2: Arrange the three numbers in order from smallest to largest
EXAMPLE: a < b < c
1.2 < 1.6 < 3.1
Step 3: Recall the Triangle Inequality Theorem
NOTE: The Triangle Inequality theorem states that the sum of any two
sides of a triangle must be greater than the measure of the third side.
EXAMPLE: a, b, and c are the side lengths of a triangle if and only if a + b > c.
Step 4: Add any two sides.
EXAMPLE: 1.2 + 1.6 =3.1
1.2 + 3.1 = 4.3
1.6 + 3.1 = 4.7
Step 5: Compare the sums of two sides with the third side.
NOTE: The sum of two sides is greater than the measure of a third side,
then you know that the sides make up a triangle. Otherwise not
EXAMPLE: 3.1 = 3.1
4.3 > 3.1
4.1 > 3.1
so, we can not make a triangle withe these sides. because the sum of two
sides is equal to third side.