Question

How to construct ray reflection from convex curved surface

score 154 · Answer 1 · 2026-03-24 23:53:39

154

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How to construct ray reflection from convex curved surface

Published on 24 Mar 2026 - 23:53

score 94 · Answer 2 · 2026-03-27 13:47:02

94

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Geometrical constructions of numbers

Published on 27 Mar 2026 - 13:47

score 178 · Answer 3 · 2026-03-26 04:36:28

178

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How to find the center of an arithmetic spiral? Tangent to two lines

Published on 26 Mar 2026 - 4:36

score 789 · Answer 4 · 2018-09-20 08:48:54

789

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Kiselev's geometry Problem 67: In an isosceles triangle, two medians/bisectors/altitudes are congruent

Published on 20 Sep 2018 - 8:48

score 1.2k · Answer 5 · 2026-03-25 14:20:56

1.2k

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Why is euclidean geometry also called parabolic geometry?

Published on 25 Mar 2026 - 14:20

score 61 · Answer 6 · 2018-09-21 18:53:05

$P$ is a point inside the triangle $ABC$, from which perpendiculars intersect the sides $BC$ $AC$ $AB$ to the points...

score 181 · Answer 7 · 2018-09-21 23:29:46

181

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The line $DN$ bisects the line segment $AC$ if $AD=BC$.

Published on 21 Sep 2018 - 23:29

score 188 · Answer 8 · 2018-09-22 06:44:56

188

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Equation of perpendicular line from the midpoint of a chord to a tangent on a unit circle (complex numbers)

Published on 22 Sep 2018 - 6:44

score 47 · Answer 9 · 2026-03-25 22:05:32

47

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lower and upper bounds on $aA+ bB + cC$ and ${\large{\frac{ab}{l_c}}}+{\large{\frac{bc}{l_a}}}+ {\large{\frac{ca}{l_b}}}$.

Published on 25 Mar 2026 - 22:05

score 96 · Answer 10 · 2018-09-22 19:04:19

96

Views

Prove that $\angle AED+\angle ADO=90^\circ$ given that $\angle BAC=60^\circ$.

Published on 22 Sep 2018 - 19:04

score 168 · Answer 11 · 2018-09-23 05:09:21

168

Views

Obtaining the equation in complex form of a line without knowing two points

Published on 23 Sep 2018 - 5:09

score 242 · Answer 12 · 2026-03-26 21:10:11

242

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Is this (conjectural) geometric property intrinsically related to the distribution of Primes?

Published on 26 Mar 2026 - 21:10

score 76 · Answer 13 · 2018-09-23 19:22:02

76

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Prove that $I'$ lies on the circumcircle of $EBD$

Published on 23 Sep 2018 - 19:22

score 110 · Answer 14 · 2018-09-24 10:22:44

110

Views

Is possible to prove any theorem with Euclidean axioms?

Published on 24 Sep 2018 - 10:22

score 110 · Answer 15 · 2026-03-25 12:52:19

110

Views

Geometry problem solving involving alternate segment theory

Published on 25 Mar 2026 - 12:52

List Question

How to construct ray reflection from convex curved surface

Geometrical constructions of numbers

How to find the center of an arithmetic spiral? Tangent to two lines

Kiselev's geometry Problem 67: In an isosceles triangle, two medians/bisectors/altitudes are congruent

Why is euclidean geometry also called parabolic geometry?

$P$ is a point inside the triangle $ABC$, from which perpendiculars intersect the sides $BC$ $AC$ $AB$ to the points...

The line $DN$ bisects the line segment $AC$ if $AD=BC$.

Equation of perpendicular line from the midpoint of a chord to a tangent on a unit circle (complex numbers)

lower and upper bounds on $aA+ bB + cC$ and ${\large{\frac{ab}{l_c}}}+{\large{\frac{bc}{l_a}}}+ {\large{\frac{ca}{l_b}}}$.

Prove that $\angle AED+\angle ADO=90^\circ$ given that $\angle BAC=60^\circ$.

Obtaining the equation in complex form of a line without knowing two points

Is this (conjectural) geometric property intrinsically related to the distribution of Primes?

Prove that $I'$ lies on the circumcircle of $EBD$

Is possible to prove any theorem with Euclidean axioms?

Geometry problem solving involving alternate segment theory

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