Displaying and manipulating vectors in Geometry App

[Eddie W. Shore]

I don't recall seeing any feature to draw vectors in the geometry app - I could be wrong.

I think we would have to plot vectors (using line segments?) manually.

------------------------------------------------
For example, adding two vectors [5,3] and [1,6].

(let I be the imaginary number square root of -1, Shift+3, the point(x,y) command should also work as an alternative)

Set the following objects - Symb screen:
GA = point(0,0)
GB = point(5,3)
GC = segment(GA,GB)
GD = point(5+1,3+6)
GE = segment(GB,GD)
GG = segment(GA,GD) ** result of addition (make this a different color)

Num screen:
coordinates(GD) and have this marked - that gives you the addition of "vectors" GC and GE.

If you want angle, type in the Num screen:
angle(GE,GC) - make sure you calculator is Degrees mode and you pick segments in a counterclockwise fashion

(please see screen shots below)
------------

If anyone has a better way to do this, please contribute.