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" K and PHQ are tangents. A tangent of a circle is at right angles to the diameter drawn through the point of contact. There may be tangents to other curve-lines as well as to circles. "
The Description, Nature and General Use, of the Sector and Plain-scale ... - Página 3
por Edmund Stone - 1746 - 44 páginas
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Elemento of Geometry, Theoretical and Practical: Containing a Full ...

George Clinton Whitlock - 1848 - 338 páginas
...secant to the circle. Cor. 5. A Tangent, that is a line which touches a circle (177) without cutting it, is at right angles to the diameter drawn through the point of tangency, and the converse. Let TAT' be tangent to the circle at A ; then will TT' be perpendicular...
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A compendium of modern geography

Alexander Stewart - 1864 - 684 páginas
...— that is, does not go into it. In Diag. 1 (page 9), DK and PHQ are tangents. A tangent of a eirele is at right angles to the diameter drawn through the point of eontaet. There may he tangents to other eurve-lines as well as to eireles. The path or eourse in whieh...
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A compendium of modern geography

Alexander Stewart - 1869 - 530 páginas
...that is, does not go into it. In Diag. 1 (page 9), I) K and PHQ are tangents. A tangent of a circle is at right angles to the diameter drawn through the point of contact. There may be tangents to other curve-lines as well as to circles. The path or course in which a heavenly...
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Elements of astronomy

Hugo Reid - 1874 - 274 páginas
...not cut it, that is, does not go into it. In Fig. 8, DK and PHQ are tangents. (A tangent of a circle is at right angles to the diameter drawn through the point of contact. — There may bo tangents to other curve lines as well as to circles.) 391. The path or course in which...
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