Tool: Parallel lines (Coordinate Geomtery)  Math Open Reference 


Go to:  http://www.mathopenref.com/coordparallel.html (opens a new window)  
Description:  An interactive applet and associated web page that demonstrate the properties of parallel lines in coordinate geometry. The applet presents two lines, each defined by a pair of draggable points. If they are parallel the slopes are the same and the applet adds the parallel arrow marks to them. The slope of each line is continuously recalculated and the case of vertical lines (with undefined slope) is handled correctly. The is a software "detent" that snaps the lines to parallel if they are close to it. The grid, axis pointers and coordinates can be turned on and off. The slope calculation can be turned off to permit class exercises and then turned back on the verify the answers. The applet can be printed as it appears on the screen to make handouts. The web page has a full description of the method for determining if lines are parallel, a worked example and has links to other pages relating to coordinate geometry. Applet can be enlarged to full screen size for use with a classroom projector. After use in the classroom, student can access it again from any web browser at home or in the library with no login required. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com. 

Technology Type:  Flash  
Author:  John Page  
Language:  English  
Cost:  Does not require payment for use  
Average Rating:  [0]  Login to rate this resource  
My MathTools:  Login to Subscribe / Save This  
Reviews:  be the first to review this resource  
Discussions:  start a discussion of this resource  
Courses:  Geometry  Coordinate geometry  
Algebra  Parallel Lines  
