. 8. llirough any given point, to draw a tan-gent to a circle. Let the given point be at A; draw theline A C, on which describe the semicircleADC; draw the line A D B, cutting thecircumference in D, which is the tangent asrequired. 9. To draw from or to the circumference of a circle lines tendingtowards the centre, ivhen the centre is inaccessible. Divide the whole or any givenportion of the circumference intothe desired number of equal parts;then, with any radius less thanthe distance of two divisions, de-scribe arcs cutting each ot
. 8. llirough any given point, to draw a tan-gent to a circle. Let the given point be at A; draw theline A C, on which describe the semicircleADC; draw the line A D B, cutting thecircumference in D, which is the tangent asrequired. 9. To draw from or to the circumference of a circle lines tendingtowards the centre, ivhen the centre is inaccessible. Divide the whole or any givenportion of the circumference intothe desired number of equal parts;then, with any radius less thanthe distance of two divisions, de-scribe arcs cutting each other, asA 1, B 1, C 2, D 2, (fee; draw thelines C 1, B 2, D 3, <fec., Avhich lead to tlie centre, as required. 7b draiv the end lines. As A r, F r, from C describe the arc r, and with the radius C 1, 2*
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectenginee, bookyear1856
