. Mathematics, compiled from the best authors and intended to be the text-book of the course of private lectures on these sciences in the University at Cambridge [microform]. SPHERIC GEOMETRY. 381 PROBLEM IV. To draw a great circle through two given points in the plane of the primitive. 1. When one of the points is in the centre, and the other inthe periphery, or elsewhert in the primitive. Let C, and Aor R, be the points* Draw a rightline through thecentre and theother given point,asACB,orDCE;and it will be thecircle required. u>i. 2. When one point is in the circumference of the primitive
. Mathematics, compiled from the best authors and intended to be the text-book of the course of private lectures on these sciences in the University at Cambridge [microform]. SPHERIC GEOMETRY. 381 PROBLEM IV. To draw a great circle through two given points in the plane of the primitive. 1. When one of the points is in the centre, and the other inthe periphery, or elsewhert in the primitive. Let C, and Aor R, be the points* Draw a rightline through thecentre and theother given point,asACB,orDCE;and it will be thecircle required. u>i. 2. When one point is in the circumference of the primitive,,and the other out of the centre. Let A, D, be the given points. Through A,the given pointin the circumfer-ence, draw thediameter AB; andan oblique circle,described throughA, D, B, will bethe projection ofthe great circle re-quired.
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