List questions from plane-geometry

Published on 05 Jul 2018 - 1:04

75

Views

Subset of the $(x,y)$ plane satisfying $x^2 - xy + y^2 \le 0$

Published on 09 Jul 2018 - 8:05

54

Views

Combinatorial question on the arrangement of hyperplanes

Published on 25 Mar 2026 - 3:01

498

Views

Points of tangency from a point M to an ellipsoid-plane intersection

Published on 25 Mar 2026 - 14:22

135

Views

Congruent chords that subtend incongruent arcs

Published on 16 Jul 2018 - 17:07

187

Views

Spanning tree in the unit square with low diameter and low degree

Published on 25 Mar 2026 - 23:10

74

Views

How to tell which faces of a convex solid are visible.

Published on 20 Mar 2026 - 0:58

2.3k

Views

Specification of 2D plane in 4D space

Published on 26 Mar 2026 - 4:30

123

Views

Finding angles with bisectors

Published on 25 Mar 2026 - 11:08

62

Views

2D plane characterization for Euclidian space of >1 dimension

Published on 25 Mar 2026 - 13:33

2.1k

Views

Derive Equation of Plane passing through the intersection of two planes

Published on 23 Jul 2018 - 14:51

303

Views

Prove $\frac{BC}{CA} \cdot \frac{AE}{EF} \cdot \frac{FD}{DB} = 1$ in Convex hexagon

Published on 26 Mar 2026 - 14:21

72

Views

2nd Point of Sector that lies on Circle on a 2D coordinate plane?

Published on 25 Mar 2026 - 17:53

52

Views

Normal plane at a point on the intersecting line

Published on 27 Jul 2018 - 8:57

2.5k

Views

How is $I-vv^T$ the projection onto the orthogonal complement of the line through the origin in the direction $v$?

Published on 26 Mar 2026 - 3:01

List Question

How to find parameters of 3D plane in new frame of reference?

Subset of the $(x,y)$ plane satisfying $x^2 - xy + y^2 \le 0$

Combinatorial question on the arrangement of hyperplanes

Points of tangency from a point M to an ellipsoid-plane intersection

Congruent chords that subtend incongruent arcs

Spanning tree in the unit square with low diameter and low degree

How to tell which faces of a convex solid are visible.

Specification of 2D plane in 4D space

Finding angles with bisectors

2D plane characterization for Euclidian space of >1 dimension

Derive Equation of Plane passing through the intersection of two planes

Prove $\frac{BC}{CA} \cdot \frac{AE}{EF} \cdot \frac{FD}{DB} = 1$ in Convex hexagon

2nd Point of Sector that lies on Circle on a 2D coordinate plane?

Normal plane at a point on the intersecting line

How is $I-vv^T$ the projection onto the orthogonal complement of the line through the origin in the direction $v$?

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