An Elementary Geometry and TrigonometryThompson, Bigelow, and Brown, 1872 - 238 σελίδες |
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Αποτελέσματα 1 - 5 από τα 35.
Σελίδα 2
... the sum of all its parts . 8. Magnitudes respectively equal to the same magnitude are equal to each other . 9. A straight line is the shortest distance between two points . BOOK I. ANGLES , LINES , POLYGONS . ANGLES . 2.
... the sum of all its parts . 8. Magnitudes respectively equal to the same magnitude are equal to each other . 9. A straight line is the shortest distance between two points . BOOK I. ANGLES , LINES , POLYGONS . ANGLES . 2.
Σελίδα 6
... respectively the same direc- tion as ED and EF , including the angle E ; then angle Bangle E. B A F For since BA has the same direction as ED , and BC the same as EF , the differ- ence of direction of BA and BC must be E -D the same as ...
... respectively the same direc- tion as ED and EF , including the angle E ; then angle Bangle E. B A F For since BA has the same direction as ED , and BC the same as EF , the differ- ence of direction of BA and BC must be E -D the same as ...
Σελίδα 9
... respectively equal are mutually equilateral . 23. Polygons whose angles are respectively equal are mutu- ally equiangular . Two equal sides , or two equal angles , one in each polygon , similarly situated , are called homologous sides ...
... respectively equal are mutually equilateral . 23. Polygons whose angles are respectively equal are mutu- ally equiangular . Two equal sides , or two equal angles , one in each polygon , similarly situated , are called homologous sides ...
Σελίδα 11
... respectively equal , the remaining angles are equal . 36. Cor . 3. In a triangle there can be but one right angle , or one obtuse angle . 37. Cor . 4. In a right triangle the sum of the two acute angles is equal to a right angle . 38 ...
... respectively equal , the remaining angles are equal . 36. Cor . 3. In a triangle there can be but one right angle , or one obtuse angle . 37. Cor . 4. In a right triangle the sum of the two acute angles is equal to a right angle . 38 ...
Σελίδα 12
... respectively equal to two angles and the included side of the other , the two triangles are equal in all respects . In the triangles ABC and DEF , let the angle A equal the angle D , the angle C equal the angle F , and the side A C ...
... respectively equal to two angles and the included side of the other , the two triangles are equal in all respects . In the triangles ABC and DEF , let the angle A equal the angle D , the angle C equal the angle F , and the side A C ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
A B C ABCDEF acute angle adjacent altitude angle BCD apothem arc or angle bisect centre chord circumference comp cone construct the triangle convex surface Corollary cosec decr diagonals diameter distance divided draw equiangular equilateral equivalent feet Find the Log frustum Geom given angle given line given point given side hypothenuse included angle incr inscribed internal angles isosceles triangle lines A B Logarithm M.
M. Sine multiplied number of sides opposite side parallelogram parallelopiped perimeter perpendicular PLANE GEOMETRY plane triangle PLANE TRIGONOMETRY prism PROBLEM quadrilateral radii radius ratio rectangle regular polygon right angle right pyramid right triangle right-angled triangle Scholium secant segment side opposite similar triangles slant height sphere square straight line Tang tangent THEOREM THEOREM VII trapezoid triangle ABC TRIGONOMETRY vertex
Δημοφιλή αποσπάσματα
Σελίδα 30 - Hence -,- = -76" dn that is a" : b" = c" : dn THEOREM IX. 23 1 If any number of quantities are proportional, any antecedent is to its consequent as the sum of all the antecedents is to the sum of all the consequents. Let a : b = c : d...
Σελίδα 49 - A circle is a plane figure bounded by a curved line, called the circumference, every point of which is equally distant from a point within called the center.
Σελίδα 96 - Upon a given straight line to describe a segment of a circle, which shall contain an angle equal to a given rectilineal angle.
Σελίδα 12 - In an isosceles triangle the angles opposite the equal sides are equal.
Σελίδα 11 - 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 are equal in all respects.
Σελίδα 23 - If two triangles have two sides of one respectively equal to two sides of the other, and the angles contained by those sides supplementary, the triangles are equal in area.
Σελίδα 20 - ... polygon, is equal to twice as many right angles as the polygon has sides minus two.
Σελίδα 71 - The convex surface of a right prism is equal to the perimeter of its base multiplied by its altitude.
Σελίδα 40 - At a point 200 feet from, and on a level with the base of a tower, the angle of elevation of the top of the tower is observed to be 60° : what is the height of the tower?
Σελίδα 23 - In every plane triangle, the sum of two sides is to their difference as the tangent of half the sum of the angles opposite those sides is to the tangent of half their difference.