A complete treatise on practical land-surveying, in seven parts; (1839)
Nesbit, A[nthony], 1778-1859. [from old catalog] · London, Longman, Orme, Browne, Green, and Longmans; [etc., etc.] · leaf 31
43. A chord is a right line joining the extremities of an arc ;as the line A B. 44. A segment is any part of a circle hounded by an arc andits chord. 45. A semicircle is half of a circle, or a segment cut off bythe diameter; as A B C. … 46. A sector is any part of a circle bounded by an arc, andtwo radii. 47. A quadrant is the fourth part of a circle, or a sectorbounded by an arc and two radii at right angles to each other ;as C D B. Corol. Hence a right angle is said to contain 90°. Note.—All Definitions and Rules should be…
Surveying
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