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
No. Vectors add at rightangle bythe pythagoran theorem: resultant sum = square root of (vector 1 squared + vector 2 squared)
Draw them at right angles to each other.
Let two equal magnitude vectors be 'X'.. Then, resultant=1.414X
A triangle...
No. Angles of vectors are not additive, leave alone associative.
Yes, when two vectors are at right angles to each other, their resultant vector is greater than either of the individual vectors. This is due to the Pythagorean theorem, which states that the magnitude of the resultant vector is given by the square root of the sum of the squares of the magnitudes of the two vectors. Thus, if the vectors have magnitudes ( A ) and ( B ), the resultant ( R ) is ( R = \sqrt{A^2 + B^2} ), which is always greater than the larger of ( A ) or ( B ) unless one of them is zero.
A resultant Vector.
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.
The sum of two or more vectors is called the resultant vector. It represents the combination of all individual vectors acting together.