Interoperable interactive geometry for Europe
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Review for "Innenwinkel Lösung"

Standard but nice, some strange spiraling effects

Global comment:

Review filed on 2010/11/10 22:28 by Christian Mercat.

You move the points to see the measure of the angles in a triangle summing to 180°. The color of the measure is the same as the angle itself. Lots of German text hard to edit without Cinderella therefore more or less useless for non German speaking people without the software. The correspondence between measures and angles is not correct for obtuse angles or when you circle a vertex around another one: the measure of the angle does increase by 360° (which is a really interesting and mathematically correct fact) but the way the angle is depicted doesn't show this very complex issue.
This review is done without a trial in classroom.

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