Two point envelopes

The motion is given by point envelope A of a line a and point envelope B of a line b. Lines a, b are perpendicular. Draw the trajectory of intersection C and determine tangent line to the trajectory.

What is trajectory of the intersection point .

Duplicate construction

Set up the moving mechanism with two point envelopes A, B of perpendicular lines a and b. Draw trajectory of intersection point

Geotest 8045

The motion is given by point envelopes (b), (c) of lines b, c. Construct the position K1 of given point K ∈ b at the instant position b1.