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Books Bücher 71 - 80 von 194 in IF a straight line touch a circle, and from the point of contact a straight line...
" IF a straight line touch a circle, and from the point of contact a straight line be drawn at right angles to the touching line, the centre of the circle shall be in that line. "
Military examinations. Mathematical examination papers, set for entrance to ... - Seite 99
von Woolwich roy. military acad, Walter Ferrier Austin - 1880
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Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1868 - 410 Seiten
...when the adjacent angles are equal, they are right angles. (I. def. 10.) PROPOSITION XXXII. THEOREM. If a, straight line touch a circle, and from the point of contact a straight line be drawn meeting the circle ; the angles which this line makes with the line touching the circle shall be equal...
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Examination for women. Examination papers, with lists of syndics and examiners

1870
...the whole line thus produced, and the given line, may be equal to the square on the part produced. 3. If a straight line touch a circle, and from the point...be drawn cutting the circle, the angles which this line makes with the line touching the circle shall be equal to the angles which are in the alternate...
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THE EDINBURGH UNIVERSITY CALENDAR 1871-72

EDWARD RAVENSCROFT - 1871
...which you appeal. tained by the whole and that part together with the square of the other part. 4. If a straight line touch a circle, and from the point...straight line be drawn cutting the circle, the angles made by this line with the line which touches the circle, are equal to the angles in the alternate...
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The Elements of Plane and Solid Geometry

Henry William Watson - 1871 - 285 Seiten
...triangles are equal in all respects, therefore DE is equal to DF, and ADE is equal to ADF. PROPOSITION 2I. If a straight line touch a circle and from the point of contact another straight line be drawn cutting the circle, the angles which the cutting line makes with the...
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Elements of geometry, containing books i. to vi.and portions of books xi ...

Euclides, James Hamblin Smith - 1872 - 349 Seiten
...are normals to the circle at the points where they meet the circumference. PROPOSITION XIX. THEOREM. If a straight line touch a circle, and from the point of contact a straight line be drawn at right angles to the touching line, the centre of the circle must be in that line. Let the st. line...
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Elements of geometry, containing the first two (third and fourth ..., Teil 2

Euclides - 1872
...circles touched by both lines lie in two lines at right angles to each other. PROPOSITION XIX. THEOREM. If a straight line touch a circle, and from the point of contact a straight line be draicn at right angles to the touching line, the centre of the circle must be in that line. Let the...
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The Acting Teacher's and Student's in Training Guide and Text Book for ...

Henry Major - 1873
...is equal to the same two ; and when the adjacent angles are equal, they are right angles. XXXII. — If a straight line touch a circle, and from the point of contact a straight line lie drawn meeting the circle, the angles which this line makes with the line touching the circle shall...
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Euclidian Geometry

Francis Cuthbertson - 1874 - 349 Seiten
...(111.15) but L ABP is < a right / ; ANGLES IN CIRCLES. PROPOSITION XVII. 119 If a straight line touches a circle, and from the point of contact a straight...the angles which this straight line makes with the tangent shall be equal h the angles in the alternate segments of the circle. Let ST touch the 0 QDF'm...
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Recent military, naval, and civil service examination papers in mathematics ...

Braithwaite Arnett - 1874
...double of the square on half the line, and of the square on the line between the points of section. 4. If a straight line touch a circle, and from the point of contact a straight line be drawn at right angles to the touching line, the centre of the circle shall be in that line. Describe a circle...
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Pure mathematics, Band 1

Edward Atkins - 1874
...perpendicular to DE, but FC; therefore FC is perpendicular to DE. PROPOSITIONS. Proposition 19.— Theorem. If a straight line touch a circle, and from the point of contact a straight line be drawn at right angles to the touching line, the centre of the circle shall be in that line. Let the straight...
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