 | 1859 - 414 sider
...side. The difference of any two sides of a triangle is always less than the third side. 5. The three interior angles of any triangle are together equal to two right angles. If a side of a regular quindecagon be produced, find the number of degrees in an exterior angle. 6.... | |
 | Evan Wilhelm Evans - 1862 - 116 sider
...to the sides or angles of the other, each to each, taken in the same order. I THEOREM V. The three interior angles of any triangle are together equal to two right angles. Let ABC be any triangle. It is to be proved that the angles ABC, BCA, CAB, are together equal . ^ to... | |
 | Edward Isidore Sears - 1865 - 858 sider
...series of* truths from another. Thus, for example, after we have fully demonstrated that the three interior angles of any triangle are together equal to two right angles, and that the. square described on the hypothenuse of any triangle is equal to the sum of the squares... | |
 | 1865 - 838 sider
...or series of truths from another. Thus, for example, after we have fully demonstrated that the three interior angles of any triangle are together equal to two right angles, and that the square described on the hypothenuse of any triangle is equal to the sum of the squares... | |
 | James Maurice Wilson - 1868 - 132 sider
...triangle is produced, the exterior angle is equal to the two interior and opposite angles, and the three interior angles of any triangle are together equal ' to two right angles ii 20 THEOREM 9. An isosceles triangle has the angles at its base equal . . . . . . . . . .31 THEOREM... | |
 | James Smith - 1870 - 634 sider
...maintain that these two eyes are Geometry and Logic. Well, then, to furnish the proof that the three interior angles of any triangle are together equal to two right angles, we must put a mathematical value upon a right angle : it may be 90°, or it may be 60°, or it may... | |
 | University of Madras - 1873 - 436 sider
...to fce proportional ? Explain the meaning of the terms " componendo," " dividendo.'' II. The three interior angles of any triangle are together equal to two right angles. If a rectilineal figure haa more than four aides, shew that at least one of its angles must be greater... | |
 | Royal College of Surgeons of England - 1874 - 36 sider
...produced, the exterior angle shall be equal to the two interior and opposite angles ; and the three interior angles of any triangle are together equal to two right angles. 7. If a straight line be divided into two equal, and also into two unequal parts, the rectangle contained... | |
 | Wisconsin. Department of Public Instruction - 1880 - 390 sider
...Classify plane triangles. Examination of Teachers for State Certificates. •6. Theorem — The three interior angles of any triangle are together equal to two right angles. 7. Problem — To a given square, draw an inscribed and circumscribed circle. 8. Theorem — In a circle,... | |
 | Wisconsin - 1880 - 1304 sider
...determining the area of a circle. Examination of Teachers for /State Certificates. 6. Theorem — The three interior angles of any triangle are together equal to two right angles. 7. Problem — To a given square, draw an inscribed and circumscribed circle. 8. Theorem — In a circle,... | |
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The three interior angles of any triangle are together equal to two right angles. 
