 | Thomas Simpson - 1800 - 448 sider
...the number of degrees and minutes, &V. it contains. 3. The difference of any arch from 90 degrees, or a quadrant, is called its complement, and its difference from 1 80 degrees, or a femicircle, its fupplement. 4'. A chord, or fubtenfe, is a right line drawn from one... | |
 | Edward Augustus Kendall - 1811 - 476 sider
...thirty-four degrees, twenty-eight minutes, and fifty seconds. .. <• •. The difference of an arc from 90°, or a quadrant, is called its complement ; and its difference from 180°, its supplement: thus in plate Miscel. fig. S3, the arc AB, is the complement IIB : but All w... | |
 | Robert Gibson - 1818 - 502 sider
...the periphery, is calledlan arch ; and is the measure of the angle at the centre, which it subtends. 4. The difference of any arch from 90°. or a quadrant, is called the complement of that arch, and its difference from 180°, or a semi-circle, is called its supplement.... | |
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A chord, or fubtenfe, is a right line drawn from one extremity of an arch to the other ; thus B £ is the chord or fubterife of the arch BAE, orBDE. 