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15
Math.TechQA.Club
2026-04-05 00:23:41
1.1k
Views
Prove that every triangle is the orthogonal projection of an equilateral one
Published on
05 Apr 2026 - 0:23
#euclidean-geometry
#transformation
1.9k
Views
Composition of a rotation and translation is a rotation with what angle?
Published on
03 Apr 2026 - 10:55
#geometry
#euclidean-geometry
#rotations
156
Views
circles, power of point, cross ratios
Published on
14 Dec 2015 - 2:42
#contest-math
#euclidean-geometry
965
Views
Proof: Angle between two diagonals of a parallelogram
Published on
30 Mar 2026 - 13:37
#geometry
#trigonometry
#euclidean-geometry
#angle
219
Views
Geometry: Inequalities are preserved under addition of line segments.
Published on
15 Dec 2015 - 0:37
#geometry
#euclidean-geometry
251
Views
Finding vertices of a rhombus in complex plane
Published on
15 Dec 2015 - 5:54
#geometry
#complex-numbers
#euclidean-geometry
138
Views
Parabola conic section
Published on
27 Mar 2026 - 5:15
#euclidean-geometry
#analytic-geometry
#conic-sections
#quadratics
#locus
124
Views
Go from A to D in three equal steps
Published on
27 Mar 2026 - 1:49
#geometry
#euclidean-geometry
#geometric-construction
#constructive-mathematics
#plane-geometry
1k
Views
The reverse pizza problem .
Published on
16 Dec 2015 - 19:29
#geometry
#convex-analysis
#euclidean-geometry
#circles
440
Views
Three problems of ten circles
Published on
17 Dec 2015 - 5:39
#geometry
#euclidean-geometry
820
Views
Find the length of AB
Published on
17 Dec 2015 - 14:47
#geometry
#euclidean-geometry
#circles
170
Views
A triangle perspective with many well-known triangles
Published on
18 Dec 2015 - 1:47
#geometry
#euclidean-geometry
436
Views
Proving area of a square inside of two squares in Euclidean Geometry
Published on
10 May 2026 - 16:34
#proof-verification
#euclidean-geometry
#area
#congruences-geometry
305
Views
What is the angle $\widehat{BAC}$?
Published on
18 Dec 2015 - 15:28
#geometry
#euclidean-geometry
280
Views
Problem with Cauchy Schwarz equality proof
Published on
18 Dec 2015 - 17:43
#linear-algebra
#vector-spaces
#euclidean-geometry
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