The Common Sense of the Exact SciencesD. Appleton, 1891 - 271 σελίδες |
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Σελίδα 69
... right - hand part of each shall become the left - hand part , and the upper part the lower ; and this will amount to ... angles remain the same ; or we may put the statement into the form that when any triangle SPACE . 69.
... right - hand part of each shall become the left - hand part , and the upper part the lower ; and this will amount to ... angles remain the same ; or we may put the statement into the form that when any triangle SPACE . 69.
Σελίδα 74
... angles of a triangle are together equal to two right angles . If we draw through A , a corner of the triangle ABC ( fig . 20 ) , a line D A E , making with the side AO E A D B FIG . 20 . the same angle as BC makes with it , this line ...
... angles of a triangle are together equal to two right angles . If we draw through A , a corner of the triangle ABC ( fig . 20 ) , a line D A E , making with the side AO E A D B FIG . 20 . the same angle as BC makes with it , this line ...
Σελίδα 75
... right angles , and it must therefore be equal to the sum of the two angles which also make up two right angles with AC B. § 7. Properties of Circles ; Related Circles and Triangles . We may now apply this proposition to prove an im ...
... right angles , and it must therefore be equal to the sum of the two angles which also make up two right angles with AC B. § 7. Properties of Circles ; Related Circles and Triangles . We may now apply this proposition to prove an im ...
Σελίδα 77
... right angles . Hence the sum of the angles A D B , AC B , which are the halves of these , is two right angles . Or we may put the theorem otherwise , and say that the opposite angles of a four - sided figure whose angles lie on the ...
... right angles . Hence the sum of the angles A D B , AC B , which are the halves of these , is two right angles . Or we may put the theorem otherwise , and say that the opposite angles of a four - sided figure whose angles lie on the ...
Σελίδα 78
... right angles , and so do the angles DO F and D B F. But the three angles at o make four right angles , and the three angles of the triangle A B C make two right angles ; and of these six angles two pairs have been shown to make up two ...
... right angles , and so do the angles DO F and D B F. But the three angles at o make four right angles , and the three angles of the triangle A B C make two right angles ; and of these six angles two pairs have been shown to make up two ...
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A B C Archimedes arrangements body centre circle circumference clockwise coincide commutative law complex number Conon of Samos consider containing convert cose count counter-clockwise cube curve cylinder denoted determine directed step distance divide dots edge ellipse equiangular spiral expressed exterior angle figure five times six four fourth proportional fraction geometrical grow at logarithmic Hence hyperbola lemniscate length letters logarithmic rate logarithmic spiral loop magnitude means measure motion move Natural logarithms operation parabola parallel parallelogram perpendicular plane position quantity quaternion radius ratio rectangle represent result reverse right angles right six-face round scalar shadow shape side smooth-points space sphere spiral square step A P step backwards step forwards straight line stretch surface symbol tangent termed theorem tion triangle turn unit angle unity vector steps velocity
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