Elements of Plane and Solid GeometryGinn, Heath, & Company, 1885 - 398 σελίδες |
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Σελίδα 6
... formed by straight lines are called rectilinear figures ; those formed by curved lines are called curvilinear fig- ures ; and those formed by straight and curved lines are called mixtilinear figures . 17. DEF . Figures which have the ...
... formed by straight lines are called rectilinear figures ; those formed by curved lines are called curvilinear fig- ures ; and those formed by straight and curved lines are called mixtilinear figures . 17. DEF . Figures which have the ...
Σελίδα 9
... formed by producing one of the lines through the vertex are equal . Thus if the straight line AB meet the straight line CD so that the adjacent angles ABC and ABD are equal to one another , each of these an- gles is called a right angle ...
... formed by producing one of the lines through the vertex are equal . Thus if the straight line AB meet the straight line CD so that the adjacent angles ABC and ABD are equal to one another , each of these an- gles is called a right angle ...
Σελίδα 11
... formed by two straight lines , of which one is produced from the point of meeting in both di- rections , are supplements of each other , and may A be called supplementary adjacent angles . ON THE METHOD OF SUPERPOSITION . H C B 35. The ...
... formed by two straight lines , of which one is produced from the point of meeting in both di- rections , are supplements of each other , and may A be called supplementary adjacent angles . ON THE METHOD OF SUPERPOSITION . H C B 35. The ...
Σελίδα 47
... ) . Q. E. D. Ex . If the equal sides of an isosceles triangle be produced , show that the angles formed with the base by the sides produced are equal . PROPOSITION XXIX . THEOREM . 113. A straight line which TRIANGLES . 47.
... ) . Q. E. D. Ex . If the equal sides of an isosceles triangle be produced , show that the angles formed with the base by the sides produced are equal . PROPOSITION XXIX . THEOREM . 113. A straight line which TRIANGLES . 47.
Σελίδα 72
... formed whose perimeter is equal to the sum of the equal sides of the triangle . 12. If from the diagonal BD of a square ABCD , BE be cut off equal to BC , and EF be drawn perpendicular to BD , show that D E is equal to E F , and also to ...
... formed whose perimeter is equal to the sum of the equal sides of the triangle . 12. If from the diagonal BD of a square ABCD , BE be cut off equal to BC , and EF be drawn perpendicular to BD , show that D E is equal to E F , and also to ...
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AABC ABCD altitude apothem arc A B axis base and altitude centre centre of symmetry chord circumference circumscribed coincide cone of revolution conical surface COROLLARY cylinder denote diagonals diameter dihedral angle distance divided draw equal respectively equally distant equilateral equivalent frustum given point Hence homologous sides hypotenuse intersection isosceles lateral area lateral edges lateral faces Let A B Let ABC line A B measured by arc middle point number of sides opposite parallel lines parallelogram parallelopiped pass perimeter perpendicular plane MN polyhedral angle prove Q. E. D. PROPOSITION radii ratio rect rectangles regular inscribed regular polygon right angles right section S-ABC SCHOLIUM similar polygons slant height sphere spherical angle spherical polygon spherical triangle straight line drawn surface tangent tetrahedron THEOREM trihedral upper base vertex vertices volume