Y by
In triangle
, point
on
satisfies
and
.
Let
be the point where the perpendicular from
to line
meets the angle bisector of
.
Then, the relation
holds.
Prove that
is an isosceles triangle.





Let




Then, the relation

Prove that

This post has been edited 1 time. Last edited by Jackson0423, May 1, 2025, 2:38 PM
Reason: l
Reason: l