pedal triangle


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pedal triangle

[′ped·əl ′trī‚aŋ·gəl]
(mathematics)
The triangle whose vertices are located at the feet of the perpendiculars from some given point to the sides of a specified triangle.
In particular, the triangle whose vertices are located at the feet of the altitudes of a given triangle.
References in periodicals archive ?
For a given triangle ABC the pedal triangle of a point P is the triangle whose vertices are the feet of the perpendiculars from P to the side lines of the triangle ABC.
For example, in the second task one may draw a point P, a pedal triangle of the point, and the centre X of the inscribed circle of the pedal triangle (Figure 6, right).