Free coordinate geometry software for windows

Convert geographic coordinates from DD MM SS to decimal degree and back using the Geo::Coordinate Opera widget The Geo::Coordinate Opera widget allows you to convert geographic coordinates from DD MM SS to decimal degree or decimal degree to DD MM SS.
System requirements:
- Opera 9 or later

Geometry Master 3 is a useful program which has multiple drawing shape tools. This is a geometry help software that enhances geometrical, spatial and drawing skills using drawing tools based on geometry worksheets via the computer screen.

The program comes with many excellent drawing tools, geometry terms and shapes. The software has multiple drawing tools, color fill options and custom shape tools. It also can save the images in GMT, JPEG, or BMP format. The output image can also be printed out to the printer.

Features include: multi-color fill options, random color generation, adjustable drawing width and speed cursors, save image files in GMT, JPEG & BMP formats. Also has multi-color drawing option and solid fill options. You can also print your Image files directly to printer.

Enhancements:

• Minor updates
• Bug fixes

Real Time Polar Coordinate Vector Audio Manipulator is more of an experiment than a proper, fully-fledged audio program.
Its based on an example program in Charles Petzolds Programming Windows (fifth ed.), called Connect, which basically acts in the same way, but without any sound, user configurable colours etc.
Basically, RTPCVAM gives you a big white drawing area, onto which you can place a number of points by clicking the left mouse button. As long as the button is held down (and you have reached the maximum no. points),
moving the mouse will continue to drop points on the drawing area. Its when you let go of the button that the fun starts though...
Letting go of the mouse button causes the program to start joining up every point to every other point, and the program will start outputting sound. How the sound is output depends on the current line being drawn. Basically, the program calculates the length of the line, and its angle (i.e. the polar coordinates), and plays a section of the specified sound (the length of the section is determined by the length of the line), pitching it according to the lines angle.
This process is repeated for every single line drawn, resulting in what is probably best described as a cacophony (though an interesting cacophony, in
my opinion).
You can load any wave file you like as a sound source, although beware of using sounds that arent 44100Hz, 16-bit and mono. The program should load them, but the audio engine isnt very sophisticated, and will just play them as if they were 44100Hz, 16-bit and mono (i.e. itll sound pretty stupid...).
Dont worry if you dont have any wave files though, on start-up the program fills its buffer with a 440Hz sine wave, which can give interesting results on its own. Its usually a good idea to have the sample volume slider set to about
half way (depending on the sound source), as the way the sounds overlap almost always leads to a certain amount of clipping if you leave it at higher values.
As well, you should be careful about giving the program longer wave files, because this means the program will spend longer playing the sound for each line.
The only other thing of note is the Byte Order radio buttons. These should really have ended up in the group box with the wave file loader, but there wasnt room. Basically, they just change which order the program reads the bytes of the input wave file (this option is included because I couldnt remember which way it works on PCs/Intel machines - I think its left byte first...).

GeoGebra 3 is developed as a useful and realistic mathematics all-in-one software which is useful for secondary education, integrating geometry, algebra and calculus. On the one hand, GeoGebra is a dynamic geometry system. You can do constructions with points, vectors, segments, lines, conic sections as well as functions and change them dynamically afterwards. On the other hand, equations and coordinates can be entered directly. Thus, GeoGebra has the ability to deal with variables for numbers, vectors and points, finds derivatives and integrals of functions and offers commands like Root or Extremum.

B-Spline Circle generator is one of the simpliest software application I have ever testet. Its goal? Drawing a circle. Maybe the perfect circle.
It can be useful for children studying geometry. With only two click you can create a perfect circle. Maybe geometry isnt that hard?
Very, very simple and useful. Oh, this application requires no installation and it eats only 46 kb.

Monitor Test Screens represents eight different testmodes, some with submodes, test your monitor for sharpness, moire, geometry, convergence, high voltage supply stability, brightness, color quality and more.
Adjusts to any given resolution (even odd ones, like 1280x1024). Comes with a tutorial text. You can step through the screens with ENTER and "hold" the auto changing screens in the submodes with SPACE.