def demo_GeometricConstraints_addCollinear(sketch: adsk.fusion.Sketch):
# Create two sketch lines.
lineOne = sketch.sketchCurves.sketchLines.addByTwoPoints(adsk.core.Point3D.create(0, 0, 0),
adsk.core.Point3D.create(5, 0, 0))
lineTwo = sketch.sketchCurves.sketchLines.addByTwoPoints(adsk.core.Point3D.create(0, 10, 0),
adsk.core.Point3D.create(10, 15, 0))
# Create a collinear constraint between the lines
constraints = sketch.geometricConstraints
collinearConstraint = constraints.addCollinear(lineOne, lineTwo)