Assertion: rotation's point | /r/HasProperty | chosen as origin
Facets:
value: to make the transformation linear
type: PURPOSE
Source sentences:
text: Most common geometric transformations that keep the origin fixed are linear, including rotation, scaling, shearing, reflection, and orthogonal projection; if an affine transformation is not a pure translation it keeps some point fixed, and that point can be chosen as origin to make the transformation linear.