 | Elias Loomis - Geometry - 1871 - 302 pages
...the interior and opposite angle ABC. But the angle ACE was proved equal to BAC ; therefore the whole exterior angle ACD is equal to the two interior and opposite angles CAB, ABC (Axiom 2). To each of these equals add the angle AGB ; then will the sum of the two angles ACD, ACB... | |
 | Herbert Spencer - Psychology - 1872 - 670 pages
...angle ABC; but the angle ACE was shown to be equal to the angle BAG; therefore the whole exterior anglo ACD, is equal to the two interior and opposite angles CAB, ABC. " To these angles add the angle ACB ; then the angles ACD, ACB are together equal to the three angles... | |
 | Henry Major - Student teachers - 1873 - 588 pages
...and opposite angles; and the three interior angles of evary triangle are equal to two right cmgles. Let ABC be a triangle, and let one of its sides BC...to the two interior and opposite angles CAB, ABC, and the three interior angles of the triangle, riz., ABC, BCA, CAB, are together equal to two right... | |
 | Herbert Spencer - Psychology - 1873 - 670 pages
...angles ; and the three interior angles of every triangle are together equal to two right angles. " Let ABC be a triangle, and let one of its sides BC be produced to D ; then the exterior angle ACD is equal to the two interior and opposite angles CAB, ABC ; and the three... | |
 | Herbert Spencer - 1873 - 678 pages
...angles ; and the three interior angles of every triangle are together equal to two right angles. " Let ABC be a triangle, and let one of its sides BC be produced to D ; then the exterior angle ACD is equal to the two interior and opposite angles CAB, ABC ; and the three... | |
 | Herbert Spencer - Psychology - 1873 - 674 pages
...opposite angle ABC; but the angle ACE was shown to bo equal to the angle BAC ; therefore the whole exterior angle ACD, is equal to the two interior and opposite angles CAB, ABC. "To these angles add the angle ACB ; then the angles ACD, ACB are together equal to the three angles... | |
 | Benjamin Greenleaf - Geometry - 1873 - 202 pages
...equal to the interior and opposite angle AB C. But the angle ACE is equal to BAC; therefore, the whole exterior angle ACD is equal to the two interior and opposite angles CAB, ABC(2Q, Ax. 2). Add now to each of the equals CAB and ABC the angle ACB, and we shall have the sum... | |
 | Euclides - 1874 - 120 pages
...opposite angles ; and the three interior angles of every triangle are equal to two right angles. * Let ABC be a triangle, and let one of its sides ' • BC be produced to D : the exterior angle ACD shall be equal to the two interior and opposite angles CAB, ABC; and the three interior angles of the... | |
 | Edward Atkins - 1874 - 428 pages
...and opposite angles ; and the three interior angles of every triangle are equal to two right angles. Let ABC be a triangle, and let one of its sides BC be produced to D ; The exterior angle ACD shall be equal to the two interior and opposite angles CAB, ABC ; And the three interior angles of... | |
 | Euclid, James Bryce, David Munn (F.R.S.E.) - Geometry - 1874 - 236 pages
...angles of every triangle are together equal to two right armies. Let ABC be a triangle, and let the side BC be produced to D; the exterior angle ACD is equal to the two interior and remote angles A and B; and the three interior angles A, B, and ACB are together equal to two right... | |
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... are equal to two right angles. Let ABC be a triangle, and let one of its sides BC be produced to D ; the exterior angle ACD is equal to the two interior and opposite angles CAB, ABC ; and the three interior angles of the triangle, viz. ABC, BCA, CAB,... 
