Answer:
<C=<B=88°, <D=<A=92°(As oppositeanglesofa paralellogramare equal), AB=CD=80
Step-by-step explanation:As the opposite sides of a paralellogram are equal, 15x-100=5x+20
10x=120
x=12
Now, 15×12-100=80
So, AB=CD=80
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