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Vladimir_U's user avatar
Vladimir_U's user avatar
Vladimir_U
  • Member for 2 months
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2 votes

Parallel lines in parallelogram inside parallelogram structure

1 vote

Proving three lines in a triangle meet

1 vote

Prove that $M$ is the centroid of the triangle $BCD$.

1 vote

Is it always possible to cross two opposite pairs of adjacent sides of a convex 2n-gon by two parallel lines, not crossing through vertex?

1 vote

What is the minimal triangle that can be inscribed into equilateral triangle, while maintaining minimal distance between vertices of triangles

1 vote
Accepted

Parallel lines tangent to a strictly convex smooth plane body dividing its border in two arcs of equal length

1 vote

Given arbitrary number of triangles intersecting pairwise over hexagonal regions prove that intersection of all these triangles has positive area

0 votes

Maximal bound for area of set-difference of circular disc and arbitrary convex figure, given longest cord length of such difference set.

0 votes

Interval [0;1] is divided into 2*n sub-intervals, each smaller than ½, find two intervals with index difference n, containing points with distance ½

-1 votes

What is the largest ellipse of given eccentricity that can be inscribed into square?