 | Herbert Spencer - 1882 - 722 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... | |
 | Euclid, Isaac Todhunter - 1883 - 428 pages
...opposite angle ABC. [I. 29. But the angle ACE was shewn to be equal to the angle BAG; 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 ACB ; therefore the angles ACD, ACB are equal to the... | |
 | Stewart W. and co - 1884 - 272 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...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... | |
 | Euclid - 1892 - 460 pages
...angles: also the three interior angles of' a triangle are together equal to two right angles. Let ABC he a triangle, and let one of its sides BC be produced to D : then (i) the exterior angle ACD shall be equal to the sum of the two interior opposite angles CAB,... | |
 | Seymour Eaton - 1899 - 362 pages
...and opposite angles; and the three interior angles of every triangle are equal to two riglit angles. Let ABC be a triangle, and let one of its sides BC be produced to D; then the exterior angle ACD shall be equal to the two interior and opposite angles CAB, ABC; and the... | |
 | William Whitehead Rupert - 1900 - 148 pages
...proofs of the proposition enunciated at the beginning of the chapter : PROOF NUMBER I. A •E Fig. 5Let ABC be a triangle, and let one of its sides BC be...to the two interior and opposite angles CAB, ABC; and the three interior angles of the triangle, viz. ABC, BCA, CAB, are together equal to two right... | |
 | Euclid, Henry Sinclair Hall, Frederick Haller Stevens - 1900 - 330 pages
...opposite angles; also the three interior angles of a triangle are together equal to two right angles. B CD Let ABC be a triangle, and let one of its sides BC be produced to D. Then (i) the exterior angle ACD shall be equal to the sum of the two interior opposite angles CAB,... | |
 | Euclid - 1904 - 488 pages
...opposite angles; also the three interior angles of a triangle are together equal to two right angles. A Let ABC be a triangle, and let one of its sides BC be produced to D. Then (i) the exterior angle ACD shall be equal to the sum of the two interior opposite angles CAB,... | |
 | Herbert Spencer - 1906 - 788 pages
...opposite 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... | |
 | Euclid - 1908 - 550 pages
...to two right angles. Let ABC be a triangle, and let one side of it BC be produced to D ; I say that the exterior angle ACD is equal to the two interior and opposite angles CAB, ABC, and the three interior angles of the triangle ABC, BCA, CAB are equal to two right angles. I For let... | |
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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,... 
