Topic: measuring tools !

I found the software wonderful!!!

But there is two things missing sad
I know there is a "length of path" Measuring tool but it would be great to add these tools as well:

-  a tool for drawing a line on the Graph (Plane) and its length was shown next to it.
- and another tool for measuring the angel on the intersection of two lines (function/tangent).

Once again thanks alot for the great software !

Re: measuring tools !

Hi omeid,
for drawing lines, circles and just about any geometrical feature, then measuring angles etc on a graph, there is an excellent, free software, called "GeoGebra"
see  ; install with webstart; I recommend that you take 5 min to read from that webpage' tutorial, to get an idea of what it can do.