Build a triangle from Altitudes?
Three line segments (solid lines) intersect at a point.
Could they be the altitudes of some triangle?
You can use the sliders to set the lengths of the segments.
Drag the R, G and B dots to fix the point at
which the segments intersect and the angles between the segments.
The dotted lines are perpendicular to the altitudes
drawn from the points R, G and B.
CHALLENGE: given three altitude lengths, locate the vertices
and determine the triangle RGB.
Can this always be done? Why or why not?