I need some help solving a problem involving similar triangles

[joyinmyheart]

Question: Calculate the missing information for the following pairs of similar triangles.

Large triangle= one side 18cm, 2nd side 15cm, and exponent (a)
Small Triangle= one side 5cm, 2nd side 5.5 cm, and exponent (d)

 

[tkhunny]

Your first task is to decide which sides CORRESPOND.

"one side" is ambiguous and could refer to anything.

"2nd Side" may be specific and intentional. If so, 15/5.5 is a common ratio of corresponding sides.

 

[HallsofIvy]

But what in the world does "exponent" mean with regard to a triangle.