Midpoint or Center Tool
From GeoGebra Manual
Revision as of 13:35, 18 August 2015 by Markus.winkler (talk | contribs)
This tool has different names in different variants of English:
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You may click on either two points or one segment to get its midpoint. You can also click on a conic section (circle or ellipse) in order to create its center point.