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2 articles trouvés pour ce sujet.
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A triangle and its incenter |
2008-02-11 |
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Elle pose la question :
In the figure, P is the incenter of triangle ABC, the radius of the inscribed circle is 6cm, and the perimeter of triange ABC is 38cm. What is the area of triangle ABC?
Penny Nom lui répond. |
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A geometry proof |
2001-04-18 |
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Melissa pose la question :
Extend the bisectors of angle A, angle B, and angle C of triangle ABC to meet the circumcircle at points X, Y, and Z respectively. Show that I is the orthocenter of triangle XYZ.
Chris Fisher lui répond. |
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