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Barycentric Coordinates with
respect to a triangle
cf. Section 10.3 (BP'94)
and Section 1.5 (PBP'99)
The barycentric coordinates of a point with respect to a triangle
correspond to several ratios on the sides of the
triangle.
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Barycentric Coordinates with respect to a triangle II
cf. Section 1.5 (PBP'99)
Other ratios on the sides of a triangle corresponding
to the barycentric coordinates of a point.
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Projective Figures
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Fundamentals
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Pappus' Theorem
cf. Section 22.3 (BP'94)
The pairs of opposite sides of a planar hexagon
intersect in three collinear points.
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Pascal's Theorem
cf. Section 22.5 (BP'94)
Relationship between six points on a conic section.
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Brianchon's Theorem
cf. Section 22.6 (BP'94)
Relationship between six tangents to a conic section.
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