Alters are usually found WITHIN temples. This makes the question a bit odd. However, The Bible does say that the prophet Zechariah was killed between the temple and the alter. Other Jewish scripts say that he was killed IN the Temple which would make more sense.
Answer
The altar was in the Temple courtyard, and the Temple building was separate from the altar, so it isn't odd at all.
Slain is a form of the word to slay. Someone who is slain is dead.
Being slain means killed, so it's redundant to say 'fatally slain'. Should just be 'man is slain'.
The young man was slain without reason.
The spirit was slain before sunrise. The slain body of the housewife was found in her driveway.
David Slain is 6' 5".
The past participle of "slay" is "slain."
Many people are slain due to terrorism.
The word slain has one syllable.
Slain is the past tense of the word "slay". Slay means "to murder". Therefore slain means "has been murdered". So "slain police officers" means murdered police officers.
Ilidan was slain by Arthas, the Lich King when the two did battle.
Slain By Urusei Yatsura was created in 1998.
Christ was slain after the foundation of the world.