No, you pray the missing rak’ah and then offer sujood after salam and then offer another salam. The rakahs that you have prayed become your first rakahs and as soon as you remember, you offer the missed one
Read moreThey have their own evidences but it is weak.
Read moreNo , you don’t have to pray except if you get out of the masjid.
Read moreIf he can finish his prayer before the first takbeer, he should continue. But if he can’t, he should break his prayer and join the congregation
Read moreRepeat all of it as it is void.
Read moreYou shouldn’t do that as you can supplicate to Allah outside the prayers
Read moreNo, there is no sin.
Read moreThere is no tahiyatul masjid as it is not a masjid. If the Iqamah is called, one must join the prayer and this would suffice for tahiyatul masjid
Read moreIf you start your prayer after the Athan begins, this is permissible but not recommended
Read moreThe most authentic opinion is that you should fold
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