Surveying
Which of the following angles can be set out with the help of French cross staff?

45° only
either 45° or 90°
any angle
90° only

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

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

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