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 Books Bücher 21 - 30 von 192 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
Vollansicht - Über dieses Buch ## The First Six and the Eleventh and Twelfth Books of Euclid's Elements: With ...

Euclid - 1837 - 390 Seiten
...semicircle is acute, and an angle in a segment less than a semicircle is obtuse. PROP. XXXII. THEOR. IF a straight line touch a circle, and from the point of contact a straight line be drawn dividing the circle into two segments ; the angles made by this line with the tangent are equal to...
Vollansicht - Über dieses Buch ## Elements of Geometry: Containing the First Six Books of Euclid : with a ...

John Playfair - 1837 - 318 Seiten
...perpendicular to DE ; FC is therefore perpendicular to DE. 74 N PROP. XIX. THEOR. If a. straight linf 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 is in that line. Let the straight line...
Vollansicht - Über dieses Buch ## Elements of Plane Geometry According to Euclid

Andrew Bell - 1837 - 240 Seiten
...; that is, FC is perpendicular to DE. PROPOSITION XIX. THEOREM. If a straight line be a tangent to a circle, and from the point of contact a straight line be drawn perpendicular to the tangent, the centre of the circle shall be in that line. Let the straight line...
Vollansicht - Über dieses Buch ## A companion to Euclid: being a help to the understanding and remembering of ...

Euclides - 1837
...drawn from F, is _L DE. PROPOSITION XIX. (Argument ad absurdum). Theorem. If a straight line touches 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. x> cv, Suppose...
Vollansicht - Über dieses Buch ## Euclid's Elements [book 1-6] with corrections, by J.R. Young

Euclides - 1838
...supposed to have been subjoined, not by Euclid, but by some one of the early editors. PROP. XIX. THEOR. 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...
Vollansicht - Über dieses Buch ## The Elements of Euclid

Euclid - 1838 - 416 Seiten
...FC, that is, FC is perpendicular to DE. Therefore, if a straight line, &c. UED 0 PROP. XIX. THEOR. 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...
Vollansicht - Über dieses Buch ## The Elements of Euclid; viz. the first six books,together with the eleventh ...

Euclides - 1841
...besides FC, that is, FC is perpendicular to DE. Therefore, if a straight line, &c. QED PROP. XIX. THEOR. 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. and from C let...
Vollansicht - Über dieses Buch ## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1842 - 317 Seiten
...other line but FC can be perpendicular to DE ; FC is therefore perpendicular to DE. PROP. XIX. THEOR. 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 is in that line. Let the straight line...
Vollansicht - Über dieses Buch ## Elements of geometry: consisting of the first four,and the sixth, books of ...

Euclides - 1842
...perpendicular to DE. Therefore, if a straight line, &c. QED PROP. XIX. THEOR. IF a straight line touches 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. ELEMENTS Let...
Vollansicht - Über dieses Buch ## The British Annals of Education for ...: Being The Scholastic ..., Band 1

1844
...opposite angles of any quadrilateral inscribed in a circle, are together equal to two right angles. 11. If a straight line touch a circle, and from the point...be drawn cutting the circle ; the angles which this line makes with the touching line, shall be equal to the angles in the alternate segments. 12. If two...
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