△ABC is an isosceles triangle. Select a possible ratio for the lengths of the sides of △ABC if its perimeter is 42 inches and the length of each side is a whole number.

Question

△ABC is an isosceles triangle.

a. Select a possible ratio for the lengths of the sides of △ABC if its perimeter is 42 inches and the length of each side is a whole number.

a. 7:4:4

b. 5:4:4

c. 4:3:3

d. 3:2:2

b. Name possible measures for the sides of △ABC using your answer to part a. List the measures in descending order.

_____ , ______ , ______

c. If △WXY is also isosceles and has a perimeter of 28 and △ABC has sides with the measures you gave in part b, what must be the measure of the sides of △WXY so that △WXY ~ △ABC ?

List the measures in descending order.

_____ , ______ , ______

Answer 1

a. Which one adds to a factor of 42?