Diametrically opposite lines of longitude and the Equator are called G

1.	Diametrically opposite lines of longitude and the Equator are called Great Circles.
Answer» Every longitude along with its opposite longitude makes a complete circle around the earth and another complete big circle is the equator; while the latitudes make smaller circles along with the poles to be only points. So the equator and the longitudinal lines around the earth are called the Great Circles.

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