Answer:
Measure of third side = 2.1 inches
Step-by-step explanation:
Perimeter of any polygon = Sum of lengths of all sides of the polygon
From the figure attached,
Number of sides of the polygon = 3
Therefore, perimeter of a triangle = sum of all three sides of the given triangle
Length of two sides = 1.7 inches and 3.4 inches.
Let the third side = x inches
Perimeter of the triangle = 7.2 inches
By the definition of the perimeter,
7.2 = 1.7 + 3.4 + x
7.2 = 5.1 + x
x = 7.2 - 5.1
x = 2.1 inches
Therefore, third side of the given triangle is 2.1 in.
