Projective Geometry
Preset
empty plane
conic sections
focal points
conic pencils
dual conic pencils
complete quadrangle
conic sections 1
conic sections 2
pencil of conics
dual pencil of conics
pencil of circles
pencil of horocycles
Desargues' theorem
Pappus' theorem
Pascal's theorem
Brianchon's (dual of Pascal's)
three-conics theorem
focal quadrangles
circumferences
incircles and excircles
circles by line&points
circles by point&lines
nine-point conic (Euclidean)
Feuerbach circle (Euclidean)
gardener's ellipse
focus-sharing ellipses
Metric
+++|+++
00+|++0
++−|++−
++0|00+
00+|+00
0+−|+00
−++|−++
00+|+−0
+−+|+−+
elliptic
Euclidean
hyp: Lobachevskian
dual Euclidean
Galilean
dual Minkowskian
hyp: dual Lobachevskian
Minkowskian
hyp: de Sitter
Elementary constructions
draggable points
intersections of lines/conics
midpoints of a pair of points
focal points of a pair of conics
draggable lines
lines given points/tangent conics
angular or perpendicular bisectors
perpendicular to a line
focal lines of a pair of conics
conics given points/tangents
singular conic
conic given a focal pair to a conic
element of a pencil of conics
circle given center and periphery
circles given points/tangents
poles/polars to a conic
images under a reflection
tangents of a conic
pencil of conics
dual pencil of conics
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Line width
Point size
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