To calculate the perimeter of an isosceles triangle, the expression 2[i]s[/i] +[i] b[/i] is used, where [i]s[/i] represents the length of the two congruent sides and [i]b[/i] represents the length of the base. What effect, if any, does increasing the length of the congruent sides have on the expression?
[list=1] [*]Refer to the expression given: 2[i]s[/i] +[i] b[/i]. [*]If the value of the congruent sides, [i]s[/i], is increased, the product of 2[i]s[/i] will also increase. Likewise, if the value of [i]s[/i] is decreased, the value of 2[i]s[/i] will also decrease. [*]If the value of [i]s[/i] is changed, the result of the change in the terms is a doubling of the change in [i]s[/i] while the value of [i]b[/i] remains the same. [/list]