for production of accurate maps of wide areas

for developing the science of geodesy

making use of most accurate instruments and methods of observation

all the above.

13.75 m

3.44 m

1375 m

none of these.

0.02 m inclined upwards

0.04 m inclined downwards

0.04 m inclined upward

none of these.

25 cm

20 m

45 m

10 m

converge from the south pole to the north pole

converge from the north pole to the south pole

converge from the equator to the poles

run parallel to each other.