Are the following figures similar? parallelograms abcd and efgh are shown. ab equals 2. ad equals 10. ef equals 5. eh equals 25.

Yes,
they are similar

here's the reason why,
AD = 10
EH = 25

and

AB =2
EF = 5

just for the sake of verifying this answer
take EF = x
where, x is a number we will get if we find both parallelograms similar

AD/ EH = AB /EF

10/25 = 2/x
10x = 50
x = 5

congratulations, we got x =5 which means EF is also equal to 5.
Hence, proved