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Basic geometrical constructions

These geometric methods are the basis, or first steps, of every construction. Frequently they form part of more complex constructions in Graphical Communication.

bisecting a line bisecting a line in 4 bisecting an angle constructing a 60 degree angle dividing a line in 3 parts dividing a line into ratio Erecting a perpendicular from a point on a line Dropping a perpendicular from a point to a line