| Daniel Carhart - Surveying - 1888 - 498 pages
...from tangent, which is half the angle that two such equal chords will make with each other, and also **half the angle at the centre of the circle subtended by the chord.** From any point on the circular curve as a position of the instrument, successive deflections of the... | |
| Bennett Hooper Brough - Mine surveying - 1888 - 302 pages
...which the [ c angle is measured lies upon the arc, Fig. 79 as at E, it is the angle BEF = AEG that **is equal to half the angle at the centre of the circle.** When the point at which the angle is measured is one of the ends of the arc, as at A, it is the angle... | |
| Bennett Hooper Brough - Mine surveying - 1894 - 326 pages
...point at which the angle is measured is one of the ends of the arc, as at A, it is the angle DAB that **is equal to half the angle at the centre of the circle,** expressed by a formula, the angle at the circumference in minutes = ACB = FEB=> DAB = half the angle... | |
| Cora Lenore Williams - Geometry - 1905 - 42 pages
...external point. Prop. 101. Tangents to a circle from the same external point are equal. Prop. 102. An **angle formed by a tangent and a chord is equal to half the angle at the** center standing on the intercepted arc. Prop. 103. An angle formed by two secants intersecting within... | |
| Bennett Hooper Brough - Mina (Indic people) - 1906 - 368 pages
...at which the angle is measured lies upon the arc, as at E, it is the angle BEF = AEG Fig. 79. that **is equal to half the angle at the centre of the circle.** When the point at which the angle is measured is one of the ends of the arc, as at A, it is the angle... | |
| Edith Long, William Charles Brenke - Geometry, Plane - 1916 - 276 pages
...To construct a tangent to a circle that shall pass through a given external point. Theorem XXIV. An **angle formed by a tangent and a chord is equal to half the** central angle standing on the intercepted arc. Corollary. Tangents to a circle from the same point... | |
| David S. Kahn, Princeton Review - Mathematics - 2003 - 303 pages
...From Rule #4, we know that ¿ A io°. If we solve for A, we get LA = 60°. Rule #5: The measure of an **angle formed by a tangent and a chord is equal to half** of the measure of its intercepted arc. Thus, in the figure below, angle A is equal to ¿ ¿ 100° =... | |
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