Q&A #6466

Teachers' Lounge Discussion: Triangles

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From: Joe <vernonmorris1@yahoo.com>
To: Teacher2Teacher Public Discussion
Date: 2006030419:15:26
Subject: Interactive Internet Triangle Activity

If you're looking for a great interactive Math lesson on triangles and
all of their properties such as 1) the relationship between the size
of an angle and the size of an opposite side or 2) that the sum of any
two sides must be greater than the third side or 3) that all angles in
a triangle must add up to 180 deggrees--I found a great interactive
web page that actually has a completely interactive triangle that you
can manipulate and move around just by clicking on the triangle's
vertexes and dragging them. The size of the angles and the sides are
displayed on the web page. I took all of my 9th grade math classes
there and the students were really engaged by just trying to explore
how these relationships play out with all triangles. Does anyone know
of any similar web sites or activities like this for geometric

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