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Landing gear?

If it's deployed. Due to my partner flying for work I've seen most passenger planes from above while at the gate or in flight. Never paid attention to the landing gear except to note that it was down.

But for most people when they look at a plane it's either from the front or the back. Boeing planes have a sharp tapered nose. Airbus have rounder nose with a steep incline at the cockpit window. To me, one looks like a shark and the other a dolphin.

It get's complicated for the smaller, regional fleets. I know an ATR when I see it but I would have some difficulty differentiating an Embraer from a CRJ or 707.

707 was a quadjet, you mean 717? You can tell it apart by how the engines are mounted at an angle from the body (pointing slightly upwards).

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