Elements of Geometry and Trigonometry: From the Works of A. M. Legendre |
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Page 14
... angles which they form are called adjacent angles . Thus , the the A- angles ABD and DBC are adjacent . 12. A RIGHT ANGLE is formed by one straight line meeting ... angle Kollin 15. An OBTUSE ANGLE is greater than a right 14 GEOMETRY .
... angles which they form are called adjacent angles . Thus , the the A- angles ABD and DBC are adjacent . 12. A RIGHT ANGLE is formed by one straight line meeting ... angle Kollin 15. An OBTUSE ANGLE is greater than a right 14 GEOMETRY .
Page 15
... right angle . 16. Two straight lines are parallel , when they lie in the same plane and can- not meet , how far ... angles formed by the sides , are called angles of the polygon . 19. Polygons are classified according to the number of ...
... right angle . 16. Two straight lines are parallel , when they lie in the same plane and can- not meet , how far ... angles formed by the sides , are called angles of the polygon . 19. Polygons are classified according to the number of ...
Page 16
... angles , taken in the same order , are equal , each to each . 23. A DIAGONAL ... right - angled and oblique - angled . 1st . A RIGHT - ANGLED TRIANGLE is one ... angle of an oblique - angled triangle is 16 GEOMETRY .
... angles , taken in the same order , are equal , each to each . 23. A DIAGONAL ... right - angled and oblique - angled . 1st . A RIGHT - ANGLED TRIANGLE is one ... angle of an oblique - angled triangle is 16 GEOMETRY .
Page 17
... angles are acute , the triangle is said to be ACUTE - ANGLED . 26. Quadrilaterals are classified with reference to ... right angles . A SQUARE is an equilateral rectangle . 2. A RHOMBOID is a parallelogram whose angles are all oblique ...
... angles are acute , the triangle is said to be ACUTE - ANGLED . 26. Quadrilaterals are classified with reference to ... right angles . A SQUARE is an equilateral rectangle . 2. A RHOMBOID is a parallelogram whose angles are all oblique ...
Page 18
... right angles are equal . 11. Only one straight line can be drawn between two points . 12. The shortest distance between any two points is mea- sured on the straight line which joins them . 13. Through the same point , only one line can ...
... right angles are equal . 11. Only one straight line can be drawn between two points . 12. The shortest distance between any two points is mea- sured on the straight line which joins them . 13. Through the same point , only one line can ...
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Common terms and phrases
ABē ABCD altitude apothem Applying logarithms centre chord circle circumference cone consequently convex surface cosec Cosine Cotang cylinder demonstrated in Book denote diameter distance divided draw edges Equation feet find the area Find the logarithmic following RULE frustum given angle greater hence homologous hypothenuse included angle inscribed intersection less Let ABC linear units log cot log sin lower base lune mantissa multiplied number of sides opposite parallel parallelogram parallelopipedon perpendicular plane MN polar triangle polyedral angle polyedron principle demonstrated prism proportional PROPOSITION proved pyramid quadrant radii radius rectangle regular polygon right angles right-angled triangle Scholium segment similar six right slant height solution sphere spherical angle spherical excess spherical polygon spherical triangle square straight line subtracting Tang tangent THEOREM triangle ABC triangular prism upper base vertex volume whence write the following