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The following constructions are to be made with the Ruler and Compasses only; the Ruler being used for drawing and producing straight lines, the Compasses for describing circles and for the transference of distances.
The bisection of an angle.
from a point outside, a given straight line, and the
of an angle equal to the sum of two given angles, &c. 5. The drawing of a line parallel to another under
various conditions and hence the division of lines
into aliquot parts, in given ratio, &c.
(a) three sides;
(8) two angles and side opposite.