GEODÆSIA Improved.
I ke Difficulty of planning the foregoing Dimensions, va-nishes when yeu consider them as two distinct Triangles, hav-ing one common Base, commonly called th c Diagonal.
Protraction.
First, At Pleasure draw the diagonal Line A C, and, byProblem IV, make the Triangle DAL; thus take from yourScale of equal Parts 14 Chains, and set it off horn A towards L,and tfiere erect a Perpendicular to the Left-hand, upon whichlay down 4 Chains, 45 Links, the first Perpendicular found ormet with in the field.
Secondly, From the fame Scale take 15 Chains, 35 Links, inyour Dividers, and lay it also from A towards C, at which Placeerect a Perpendicular also, and lay thereon 12 Chains, 10 Links,your second Perpendicular. And,
Lastly, Join the Points A, B, C, and D, together, and itis done.
PROB.