MathDB

25

Part of 1949-56 Chisinau City MO

Problems(1)

Chisinau MO p25 1949-56 VIII-IX angle bisectors in triangle of feet of altitudes

Source:

3/15/2021
Show that the straight lines passing through the feet of the altitudes of an acute-angled triangle form a triangle in which the altitudes of the original triangle are angle bisectors.
geometryangle bisector