 | Francis Chilton Young - Carpentry - 1881 - 842 pages
...of the four angles at F) which is 22° 30', being the fourth part of a right angle or 90". Then, as the three interior angles of every triangle are together equal to two right angles or 180°, the angles FAB, FBA, must be together equal to 180°— 22° 30', or 157° 30', and as these... | |
 | John Gibson - 1881 - 64 pages
...to one another. 4. Through a given point draw a straight line parallel to a given straight line. 5. The three interior angles of every triangle are together equal to two right angles. 6. If the straight line bisecting the exterior angle of a triangle be parallel to the base, prove that... | |
 | Herbert Spencer - 1881 - 756 pages
...any triangle be produced, the exterior angle is equal to the two interior and 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... | |
 | Free Church of Scotland. College Committee - Theological seminaries - 1882 - 142 pages
...any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are together equal to two right angles. 3. The complements of the parallelograms which are about the diameter of any parallelogram are equal... | |
 | Education Ministry of - 1882 - 300 pages
...side. Construct the triangle when each side is equal to half the sum of the other two. SECrION III. 1. The three interior angles of every triangle are together equal to two right angles. What ratio does the angle of a regular hexagon bear to a right angle ? 2. Triangles upon the same base... | |
 | Education - 1882 - 676 pages
...any triangle be produced, the exterior ancle is equal to the two interior and opposite angles, and the three interior angles of every triangle are together equal to two right angles. In a right-angled triangle, the angle contained by the line bisecting the right angle, and the line... | |
 | College of preceptors - 1882 - 528 pages
...any triangle ABO is bisected by Bit, which cuts the base in D ; prove that BO is greater than GD. 4. The three interior angles of every triangle are together equal to two right angles. Enunciate the two corollaries of this Proposition, but give the proof of the second corollary only.... | |
 | Herbert Spencer - Psychology - 1882 - 722 pages
...any triangle be produced, the exterior angle is equal to the two interior and 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... | |
 | John Robertson (LL.D., of Upton Park sch.) - Examinations - 1882 - 152 pages
...any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are together equal to two right angles. 6. The angles in the same segment of a circle are equal to one another. 7. A circle cuts off chords... | |
 | Marianne Nops - 1882 - 278 pages
...any triangle "be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are together equal to two right angles. Let ABC be a A, and let one of its sides BC be produced toD. (1) The exterior Z. ACD shall be equal... | |
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If a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles; and the three interior angles of every triangle are together equal to two right angles. 
