amenity
发表于 2025-3-28 15:38:13
https://doi.org/10.1007/978-3-319-23775-6Betweenness; Euclidean geometry; Euclidean plane; Geometric axioms; Incidence; Least Upper Bound
遗忘
发表于 2025-3-28 20:26:25
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四目在模仿
发表于 2025-3-29 00:32:58
https://doi.org/10.1057/9781137436719s of segments, rays, and lines that are needed for a coherent geometry. The remainder of the chapter is a study of the basic interactions between lines, angles, triangles, and quadrilaterals, comprising Pasch geometry.
怕失去钱
发表于 2025-3-29 03:57:10
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Pantry
发表于 2025-3-29 08:01:07
Devotion to St. Anne in Texts and Imagess. Every line is an axis for some reflection. A line of symmetry for a set is a line whose reflection maps that set onto itself. Every angle has a line of symmetry, its angle bisector. Compositions of reflections are isometries, and isometric sets are congruent. These concepts provide access to the
LANCE
发表于 2025-3-29 14:26:29
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Mumble
发表于 2025-3-29 18:44:44
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nitric-oxide
发表于 2025-3-29 22:31:29
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熄灭
发表于 2025-3-30 00:30:33
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收藏品
发表于 2025-3-30 04:56:03
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