The figures shown are similar. What is the scale factor? Diagram contains two trapezoids. The first has a base of 21. The second has a base of 14.

Respuesta :

The scale factor is going to be 21/14 = 3/2 (each number is divided by 7)
The correct answer could also be 14 / 21 which is 2/3

Which one to use depends on what the convention is in your classroom.
The answer is this question is 2/3