Elements of Geometry and Plane and Spherical Trigonometry: With Numerous Practical ProblemsIvison, Phinney, Blakeman & Company, 1867 - 445 σελίδες |
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Σελίδα 10
... angles treated of in geometry will be named and defined in their proper ... equal parts of the space about a point in a plane . If , in the above figure ... equal spaces about the point A , which is 10 GEOMETRY . Geometrical Magnitudes ...
... angles treated of in geometry will be named and defined in their proper ... equal parts of the space about a point in a plane . If , in the above figure ... equal spaces about the point A , which is 10 GEOMETRY . Geometrical Magnitudes ...
Σελίδα 11
... Angles . 15. A Right Angle is that formed by one line meeting another , so as to make equal angles with that other . The lines forming a right angle are perpendicular to each other . 16. An Acute Angle is less than a right angle . 17 ...
... Angles . 15. A Right Angle is that formed by one line meeting another , so as to make equal angles with that other . The lines forming a right angle are perpendicular to each other . 16. An Acute Angle is less than a right angle . 17 ...
Σελίδα 12
... equal . 26. An Isosceles Triangle is one in which two of the sides are equal . 27. An Equilateral Triangle is one in which the three sides are equal . 28. A Right - Angled Triangle is one which has one of the angles a right angle . 29 ...
... equal . 26. An Isosceles Triangle is one in which two of the sides are equal . 27. An Equilateral Triangle is one in which the three sides are equal . 28. A Right - Angled Triangle is one which has one of the angles a right angle . 29 ...
Σελίδα 14
... angle opposite the base . 45. Equal Magnitudes are those which are not only equal in all their parts , but which also , when applied the one to the other , will coincide throughout their whole extent . 46. Equivalent Magnitudes are ...
... angle opposite the base . 45. Equal Magnitudes are those which are not only equal in all their parts , but which also , when applied the one to the other , will coincide throughout their whole extent . 46. Equivalent Magnitudes are ...
Σελίδα 15
... equal , as are also all the radii . 52. An Arc of a circle is any portion of the circum- ference . 53. An angle ... angles , we have but to compare the arcs , included by their sides , of the equal circles having their centers at the ...
... equal , as are also all the radii . 52. An Arc of a circle is any portion of the circum- ference . 53. An angle ... angles , we have but to compare the arcs , included by their sides , of the equal circles having their centers at the ...
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ABCD altitude angle opposite axis bisected chord circle circumference circumscribed common cone convex surface cos.a cos.b cos.c Cosine Cotang diagonal diameter dicular difference distance divided draw equal angles equation equiangular equivalent find the angles formulæ four magnitudes frustum given line greater Hence the theorem homologous hypotenuse included angle inscribed intersect isosceles less Let ABC logarithm measured multiplied N.sine number of sides opposite angles parallelogram parallelopipedon pendicular perpen perpendicular plane ST polyedron PROBLEM produced Prop proportion PROPOSITION prove pyramid quadrantal radii radius rectangle regular polygon right angles right-angled spherical triangle right-angled triangle SCHOLIUM secant segment similar sin.a sin.b sin.c sine solid angles sphere SPHERICAL TRIGONOMETRY square straight line subtracting Tang tangent three angles three sides triangle ABC triangular prisms Trigonometry vertex vertical angle volume