denote the set of all positive integers less than 
that are relatively prime to 
.
reducible over the rational numbers, given that it has integer coefficients?
blocks, each weighing at least 
;
.
with 
you can choose a subset of the blocks whose total weight is at least 
.
such that 
.
Y by Smkh, Adventure10
Let 
be the bisector of a triangle 
. Points 
and 
are chosen on the line 
such that 
is the midpoint of the segment 
. A line 
, different from , passes through and intersects the lines 
and 
at points 
and 
, respectively.
Find the locus of the points of intersection of the lines
and 
for all possible positions of .
(M. Karpuk)
be the bisector of a triangle 
. Points 
and 
are chosen on the line 
such that 
is the midpoint of the segment 
. A line 
, different from , passes through and intersects the lines 
and 
at points 
and 
, respectively.Find the locus of the points of intersection of the lines
and 
for all possible positions of .(M. Karpuk)
,
,
we get that this line passes through 
.
,
is a parallelogram, so the locus is line parallel to 
through 
WRT 
