There are several popular designs of path lights. Popular designes include install path lights that line the walkway, recessed lights installed in the edges of walkway paving, and light either end of a path with lantern topped piers.
A 3-dimensional shape need not have any path.
A path is a line or outline of a shape. You can, for example, type text on a path so the text follows the flow of the line or fill the outlined shape with text so that text takes the shape that was outlined.
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a circle
No. The path is called an orbit. The path is in the shape of an ellipse.
overhead lights
Turn the lights on.
turn off all the lights in the room
Trajectory is the path a projectile follows Parabola is the shape of this path
An orbit, However, the shape of the orbital track is an ELLIPSOID. That is an ellipse that does not quite close up with every revolution, but overlaps very slightly. It you think of it as an ELLIPSE, the Sun lies at one of the foci of the ellipse, NOT the centre. The other foci may be though of as a 'blind' foci. If you draw an ellipse with string and two pins , the position of the two pins are the foci. NB Singular noun ; focus. Plural noun ; foci . 'Focuses is the verb. ; NOT a noun .
For decoration. To light the path of drivers, and pilots. (Airplanes could see the lights and know where they are!)