Surveying
The great circle whose plane is perpendicular to the axis of rotation of the earth, is called

Equator
Terrestrial equator
All of these
0° latitude

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Surveying
Circumpolar stars

Are seldom seen near the pole star
Rotate round the North Pole
Remain always above the horizon
Rotate round the celestial pole

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Surveying
Pick up the incorrect statement from the following. In a spherical triangle

Sum of any two sides is greater than the third
Every angle is less than two right angles
Sum of the three angles is equal to two right angles
Sum of the three angles less than six right angles and greater than two right angles

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