Resection and orientation are two important surveying techniques used to determine the location of an unknown point with respect to a known point, or a set of known points. The two point problem and three point problem are two common methods of resection and orientation.

Resection:
Resection is a technique used to determine the location of an unknown point by sighting on two or more known points, and then calculating the position of the unknown point using trigonometry. The two point problem and three point problem are two common methods of resection.

Two Point Problem:
The two point problem is a method of resection that involves sighting on two known points from the unknown point. The location of the unknown point can then be calculated using trigonometry. This method is useful when the known points are located on opposite sides of the unknown point.

Three Point Problem:
The three point problem is another method of resection that involves sighting on three known points from the unknown point. This method is useful when the known points are not located on opposite sides of the unknown point. The location of the unknown point can then be calculated using trigonometry.

Orientation:
Orientation is a technique used to determine the direction of a line or a plane with respect to a known point or a set of known points. This technique is useful in construction and engineering projects, where accurate measurements and alignments are critical.

Conclusion:
In conclusion, the two point problem and three point problem are two common methods of resection and orientation. These techniques are important in surveying, construction, and engineering projects, where accurate measurements and alignments are critical for the success of the project.