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2 items are filed under this topic.
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A triangle and its incenter |
2008-02-11 |
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From Elle:
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?
Answered by Penny Nom. |
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A geometry proof |
2001-04-18 |
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From Melissa:
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.
Answered by Chris Fisher. |
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