Math Illustrations Tips
 September 2010
 Version 2.0 of Math Illustrations was released in time for Back to School 2010.The new version contains many features requested by users of version 1.0:  more complete annotation symbols for geometry, radian and degree based axis labeling for trig, area under a curve for calculus, and curves, sectors and segments for everybody.In this issue of Tips & Tricks, we'll highlight some of these new functions.Find out more here
 Geometry Annotations [Video] New geometry annotation features make it easy to create figures like the parallel line transversal shown here.   Tricks to creating this diagram are:Set line style to have arrows at start and endUse parallel constraint if you want the parallel lines actually to be kept parallel, use parallel annotation if you want a 'not to scale' drawingUse Annotate / Congruent Angle, and set the congruence style to Tics
 Trig Graph [Video] Two new features are shown in the picture: axes displayed in radians, and area under an arc. To make the axis display in radians:Select the x-axis and right click.Choose Axis Properties / Units / Radians To create an area under a portion of the curve:Draw an arc on the function (use Draw / Arc, click on the function then drag along the function)Select the arc and use Construct / Area Under ArcNotice, you can also make the y-axis display in radians (useful for inverse trig functions).
 Regular polygon [Video] Regular polygons are easy to create in Math Illustrations 2.0To make a regular heptagon:From the menu choose Draw / N-gonClick the mouse on the location of the center, and drag to the location of the first vertex of the polygon.A pentagon will appear, with an editable value n for the number of sides.  Change this to 7.Note: you can change the 7 to 8 and change your regular heptagon to a regular octagon.
 Upgrade for only \$19 Users of Math Illustrations version 1.0 or 1.1 can upgrade to version 2.0 for only \$19 here.Don't have version 1?  Math Illustrations 2.0 is available from \$59 for a single user license here.