Small angles are NOT called vectors. The question appears to be based on some misunderstanding.
vectors or lines
When they are at right angles to one another.
The outcome is called the resultant no matter what angle At right angles the resultant is calculated a the hypotenuse of the triangle with each vector as sides
Draw them at right angles to each other.
No. Vectors add at rightangle bythe pythagoran theorem: resultant sum = square root of (vector 1 squared + vector 2 squared)
A triangle...
Let two equal magnitude vectors be 'X'.. Then, resultant=1.414X
No. Angles of vectors are not additive, leave alone associative.
A resultant Vector.
The sum of two or more vectors is called the resultant vector. It represents the combination of all individual vectors acting together.
The sum of 2 or more vectors is called the resultant vector. It is the single vector that represents the combined effect of all the individual vectors added together.
Yes. This is the basis of cartesian vector notation. With cartesian coordinates, vectors in 2D are represented by two vectors, those in 3D are represented by three. Vectors are generally represented by three vectors, but even if the vector was not in an axial plane, it would be possible to represent the vector as the sum of two vectors at right angles to eachother.