CK12 - Geometry

(Marvins-Underground-K-12) #1

Evenwith thesethreecases,we may still encounterspecialtrianglesthat exhibitinterestingproperties.


Example 1


Use a pieceof PattyPaper(

tracingpaper),or any squarepieceof paperto exploreorthocentersof isosceles


.Note:PattyPapermay be purchasedin bulk from manyInternetsites.


Determineany relationshipsbetweenthe locationof the orthocenterand the locationof the incenter, circum-
center, and centroid.


First let’s recallthat you can constructan isoscelestrianglewith PattyPaperas follows:


  1. Drawline segment.

  2. Fold point onto point to find the fold line.

  3. Locatepoint anywhereon the fold line and connectpoint to points and. (Hint:Locatepoint
    as far awayfrom and as possibleso that you end up with a good-sizedtriangle.).Trace three

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