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Monday, January 25, 2010
Speak With Conviction
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The NinePoint Center
X(5) in Kimberling's
Encyclopedia of Triangle Centers
, is the center of the ninepoint circle, which is the unique circle passing through the midpoints of the sides of the triangle. The radius of the ninepoint circle is onehalf the circumradius.
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Speak With Conviction
What Teachers Make
Formative Assessing to the Extreme
Median Grading (Part 2)
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Euclid and his Modern Rivals
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