Where is the missing piece?

Where is the slope for the water to flow?

Where is the water flowing to?

Where is this ring facing?

Which direction is he looking? (The image is Copyright Archimedes-Lab)

Which direction is the window facing?

Which hoop does the pencil pass through?

Which leg belongs to which dog?

Which one going up, which one going down?

Which one is going to finish first? :)

Which one is longer? Don't make a rapid decision.

Which one is sitting?

Which one is taller? They don't look they are the same height.

Which one is turning faster? A or B? (The image is Copyright A. Kitoaka)

Which one of the surrounded circles is bigger? Impossible to believe they are of equal size.

Which perpendicular line is bigger? Yes, they

Which vertical lines is longer? Or they equal in length?

Which way are the cubes facing? Up or down?

Which way are the hands facing?

Which way are the timbers facing?