…………. is a hypothetical surface that represents the shape the Earth's oceans.

…………….. is a mathematical figure approximating the Earth's shape.

At any point on ellipsoid, ………… latitude is greater than other types of latitudes.

It is a curve on a surface where at each point of the curve the principal normal of the curve coincides with the normal to the surface of the ellipsoid at this point.

A type of geometric effect makes difference between forward and back azimuths does not equal 180°.

…… is a method to compute length, forward, and back azimuth between two known stations at different latitude and longitude.

The geoid and reference ellipsoid are parallel at a point if ……

The angle of deflection of the vertical is NOT equal at all points on the Earth.

Triangulation stations should be intervisible

Station should form well-conditioned triangles such that any angle is less than 30 or more than 120.

In ................................., all angles are measured to establish the geodetic network.

In ................................., the lengths of all sides are measured to establish the geodetic network.