The moon in the first quarter, Venus and Mercury in the greatest eastern elongation have the same appearance.

The moon in the first quarter, Venus and Mercury in the greatest eastern elongation have the same appearance. The sun illuminates the right half of the disk, and the terminator looks like a straight line. Does this mean that these objects are visible in this case in one direction?

From geometric considerations, it is obvious that the angular distance of these objects from the Sun at the same phase Ф = 0.5 will be different and therefore they will be visible in more than one direction.

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