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Problem
#PRU-56451
Problems
Geometry
Plane geometry
Triangles
Similar triangles
The triangle generated by bases of two altitudes and a vertex
13–14
2.0
Problem
In the acute-angled triangle
A
B
C
, the heights
A
A
1
and
B
B
1
are drawn. Prove that
A
1
C
×
B
C
=
B
1
C
×
A
C
.
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