Answer:
A&C are similar; others are not similar
Step-by-step explanation:
An easy way to check for similarity among rectangles is to look at their aspect ratio. The ratio of long side to short side for each rectangle is ...
A: 100/80 = 5/4
B: 120/100 = 6/5
C: 90/72 = 5/4
Rectangles A and C are similar. No other pair is.
