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Result 1 to 9 of 9 total

GeoGebra construction of the roots of quadratic, cubic and quartic equations. (English)
Forum Geom. 16, 29-35 (2016).
Classification: G85 G45 H35
1
Special inscribed trapezoids in a triangle. (English)
Forum Geom. 13, 165-167 (2013).
Classification: G45 Reviewer: Antonio M. Oller (Zaragoza)
2
A triad of circles tangent internally to the nine-point circle. (English)
Forum Geom. 13, 7-10 (2013).
Classification: G45
3
On six circumcenters and their concyclicity. (English)
Forum Geom. 11, 269-275 (2011).
Classification: G45
4
The Soddy circles. (English)
Forum Geom. 7, 191-197 (2007).
Classification: G75
5
Garfunkel’s inequality. (English)
Forum Geom. 4, 153-156 (2004).
Classification: G90
6
A theorem on orthology centers. (English)
Forum Geom. 4, 135-141 (2004).
Classification: G90 G70 G40
7
Signed distances and the Erdos-Mordell inequality. (English)
Forum Geom. 4, 67-68 (2004).
Classification: G90 G70
8
Antiparallels and concurrent Euler lines. (English)
Forum Geom. 4, 1-20 (2004).
Classification: G75
9
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Result 1 to 9 of 9 total

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