>>2069466
Regardless of distance, the terrain would forbid projectiles fired at 45° from hitting anything inside the triangle. The siege tank would have to fire at a higher angle, which means it would have to move closer. It would also increase the time it takes for the projectile to hit the target, which would matter if the target can move. Starcraft not simulating projectiles is one of the reasons why it is not considered an RTS, and so Starcraft is offtopic for this thread.