I can only think of MAYBE with roulette, you can talk about arc length of each slot (360 degrees divided by 38 slots) you can then compare how it changes with single zero roulette (360 degrees divided by 37 slots). You could also do this with the wheels on a slot machine (ex. you want the wheel to have ten different pictures and the wheel has a radius of 6 inches, how big should each picture be).

that’s all i can think of right now.

A review session could be created where 6 or so students play roulette while the other students solve geometry problems. If a student answers incorrectly, that student will not be allowed to play that round. Respective orders will be maintained as to promote fairness. After a student wins the bet (roulette, blackjack, poker, craps), he/she will solve a problem. The student who has the highest chip count at the end of the class might receive a prize as an impetus to win. To win, that students needs to play well and solve as many problems as possible, therefore it is basically like playing a review game.

Of the ones you list, the only one I can think of with a possible geometry tie-in would be craps and (with a reach) slots. For craps, you could compute angles of deflection to try and predict the probable path the dice take as they bounce across the table. For an old-time slot machine, you could describe its workings in cerms of various geometric shapes (various cylinders for the display wheels, etc.)