No
yes it is possible.
no its not
yes
yes.
If you mean side lengths of 5, 4 and 1 then it is not possible to construct any triangle from the given dimensions.
No
0.64
No. It is not possible. * * * * * Yes, it is.
yes it is possible.
No
No, it is not.
no its not
yes
yes.
Yes
No.