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ViviTo determine a trajectory line, only two points are needed. These two points can be used to calculate the slope, which represents the direction and angle of the trajectory. Additional points can be used to further refine the trajectory line and estimate its accuracy.
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What are the minimum points of reference needed to determine a trajectory (line)?
The answer depends on the sort of trajectory. If it isthe trajectory of a projectile, affected only by gravity then 3 points are enough. As soon as you add other forces: such a drag or continued propulsion, the number of points required increases.
How many points are needed to determine a unique line?
Two distinct (different) points are needed to determine a line.
Do 3 points determine a line?
2 points determine a line.
How many points are needed to determine a unique plane?
A plane can be determined by three points, as long as the three points do not lie along a single line.
What is the minimum requirement needed to determine a unique plane?
3 points which do not all lie on the same line.
