Elements of Geometry and TrigonometryA. S. Barnes and Company, 1852 - 432 σελίδες |
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Σελίδα vi
... Angle with a Protractor , - 270 Parts of a Plane Triangle , - 271 Plane Trigonometry , Defined , ... . 271 Division of the Circumference ,. 271 Measures of Angles ... Right - Angled Triangles ,. Application to Heights and Distances , .. 277 ...
... Angle with a Protractor , - 270 Parts of a Plane Triangle , - 271 Plane Trigonometry , Defined , ... . 271 Division of the Circumference ,. 271 Measures of Angles ... Right - Angled Triangles ,. Application to Heights and Distances , .. 277 ...
Σελίδα 14
... angles equal to each other , each angle is called a right angle ; and the first line is said to be perpendicu- lar to the second . 14. An ACUTE ANGLE is an angle less than a right angle . 15. An OBTUSE ANGLE is an angle greater than a ...
... angles equal to each other , each angle is called a right angle ; and the first line is said to be perpendicu- lar to the second . 14. An ACUTE ANGLE is an angle less than a right angle . 15. An OBTUSE ANGLE is an angle greater than a ...
Σελίδα 16
... angles acute . 5. A right - angled triangle is one which has a right angle . The side opposite the right angle is called the hypothenuse , and the other two sides , the base and perpen- dicular . 6. An obtuse - angled triangle is one ...
... angles acute . 5. A right - angled triangle is one which has a right angle . The side opposite the right angle is called the hypothenuse , and the other two sides , the base and perpen- dicular . 6. An obtuse - angled triangle is one ...
Σελίδα 17
... right angle . 2. The rhombus , or lozenge , which is an equilateral rhomboid . 3. The rectangle , which is an equian ... angles not adjacent . DEFINITIONS OF TERMS . 1. An axiom is a self - evident truth . 2. A demonstration is a train ...
... right angle . 2. The rhombus , or lozenge , which is an equilateral rhomboid . 3. The rectangle , which is an equian ... angles not adjacent . DEFINITIONS OF TERMS . 1. An axiom is a self - evident truth . 2. A demonstration is a train ...
Σελίδα 19
... angle A. 3 8. The square of the line AB is designated by AB ; its cube by AB . What is meant by the square and cube of a line , will be explained in its proper place . 9. The sign ... right angles are equal to each other . BOOK I. 19.
... angle A. 3 8. The square of the line AB is designated by AB ; its cube by AB . What is meant by the square and cube of a line , will be explained in its proper place . 9. The sign ... right angles are equal to each other . BOOK I. 19.
Άλλες εκδόσεις - Προβολή όλων
Elements of Geometry and Trigonometry: From the Works of A. M. Legendre Adrien Marie Legendre,Charles Davies Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
adjacent angles altitude angle ACB angle BAD bisect centre chord circ circumference circumscribed common comp cone consequently convex surface cos² Cosine Cosine D Cotang cylinder diagonal diameter distance divided draw drawn equations equivalent feet figure find the area frustum given angle given line gles greater hence homologous homologous sides hypothenuse included angle inscribed circle intersect less Let ABC let fall logarithm magnitudes measured by half middle point number of sides opposite parallel parallelogram parallelopipedon pendicular perimeter perpendicular plane MN polyedral angle polyedron PROBLEM PROPOSITION pyramid quadrant radii radius ratio rectangle regular polygon right angles right-angled triangle Scholium secant segment side BC similar sin² sine slant height solidity sphere spherical polygon spherical triangle square described straight line Tang tangent THEOREM triangle ABC triangular prism triedral angles vertex vertices ΙΟ
Δημοφιλή αποσπάσματα
Σελίδα 24 - If two triangles have two sides and the included angle of the one, equal to two sides and the included angle of the other, each to each, the two triangles will be equal.
Σελίδα 38 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.
Σελίδα 227 - A spherical triangle is a portion of the surface of a sphere, bounded by three arcs of great circles.
Σελίδα 271 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...
Σελίδα 43 - Hence, the interior angles plus four right angles, is equal to twice as many right angles as the polygon has sides, and consequently, equal to the sum of the interior angles plus the sum of the exterior angles.
Σελίδα 215 - The surface of a sphere is equal to the product of its diameter by the circumference of a great circle.
Σελίδα 107 - If two triangles have two angles of the one equal to two angles of the other, each to each, and also one side of the one equal to the corresponding side of the other, the triangles are congruent.
Σελίδα 93 - The area of a parallelogram is equal to the product of its base and altitude.
Σελίδα 231 - The angles of spherical triangles may be compared together, by means of the arcs of great circles described from their vertices as poles and included between their sides : hence it is easy to make an angle of this kind equal to a given angle.
Σελίδα 232 - F, be respectively poles of the sides BC, AC, AB. For, the point A being the pole of the arc EF, the distance AE is a 'quadrant ; the point C being the pole of the arc DE, the distance CE is likewise a quadrant : hence the point E is...