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 Bøker Bok 71–80 av 189 på After remarking that the mathematician positively knows that the sum of the three... After remarking that the mathematician positively knows that the sum of the three angles of a triangle is equal to two right angles... Elements of Geometry and Trigonometry - Side 65
av C. Davies - 1867
Uten tilgangsbegrensning - Om denne boken ## New Franklin Arithmetic: 1st[-2d] Book, Volum 2

...it out. Tear off C FIG. 24. two of the angles and place them, as in Fig. 24, so as to show that The sum of the three angles of a triangle is equal to two right angles. e. How many degrees are there in each angle of an equilateral triangle ? /. If the two acute...
Uten tilgangsbegrensning - Om denne boken ## Numerical Problems in Plane Geometry: With Metric and Logarithmic Tables

Joe Garner Estill - 1896 - 161 sider
...value. Princeton, June, 1896. State what text-book you have read and how much of it. 1. Prove that the sum of the three angles of a triangle is equal to two right angles ; and that the sum of all the interior angles of a polygon of u sides is equal to (n—2) times...
Uten tilgangsbegrensning - Om denne boken ## Syllabus of Geometry

George Albert Wentworth - 1896 - 50 sider
...triangle is greater than the third side, and their difference is less than the third side. 138. The sum of the three angles of a triangle is equal to two right angles. 139. Cor. 1. If the sum of two angles of a triangle is subtracted from two right angles, the...
Uten tilgangsbegrensning - Om denne boken ## Numerical Problems in Plane Geometry with Metric and Logarithmic Tables

Joe Garner Estill - 1896 - 144 sider
...s= — g (Use logarithms.) Princeton, June, 1894. What text-book have you read ? 1. Prove that the sum of the three angles of a triangle is equal to two right angles. Define triangle, right angle, right triangle, scalene triangle. 3. Prove that an angle inscribed...
Uten tilgangsbegrensning - Om denne boken ## Geometry for Grammar Schools

Ephraim Hunt - 1896
...three angles of any triangle ? LESSON XXV. Review Lesson XIV. Draw any scalene triangle. PROBLEM. The sum of the three angles of a triangle is equal to two right angles. Solution. Letter the triangle, and produce the base to D. (1) The exterior angle and its adjacent...
Uten tilgangsbegrensning - Om denne boken ## Helps in the Use of Good English: A Hand-book for All who Desire to ..., Bok 1

Albert Newton Raub - 1897 - 260 sider
...substituted. Truism for truth. — A truism is a self-evident truth ; as, " All men are bipeds." " The sum of the three angles of a triangle is equal to two right angles " is a truth, but it needs proof or demonstration, and is not therefore a truism. Try for make....
Uten tilgangsbegrensning - Om denne boken ## Plane and Solid Geometry

James Howard Gore - 1898 - 210 sider
...a triangle is greater than the difference of the other two sides. PROPOSITION XII. THEOREM. 79. The sum of the three angles of a triangle is equal to two right angles. Let ABC be any triangle. To prove that Z A + Z B + Z BC A is equal to two right angles. From...
Uten tilgangsbegrensning - Om denne boken ## Entrance Examinations in Mathematics, 1884 to 1898 [with Supplements to 1900]

Yale University - 1898
...circular sheet of tin 16 inches in diameter and weighing 8.2 ounces per square foot. JUNE 1896. (a) 1. The sum of the three angles of a triangle is equal to two right angles. 2. Construct a circle having its center in a given line and passing through two given points....
Uten tilgangsbegrensning - Om denne boken ## A History of Elementary Mathematics

Florian Cajori - 1898 - 422 sider
...short, came to make perfect demonstrations. In this way he arrived unaided at the theorem that the sum of the three angles of a triangle is equal to two right angles. His father caught him in the act of studying this theorem, and was so astonished at the sublimity...
Uten tilgangsbegrensning - Om denne boken ## Plane and Solid Geometry: Inductive Method

Arthur A. Dodd, B. Thomas Chace - 1898 - 406 sider
...logarithms.) Princeton, June, Í896. State what text-book you have read and how much of it. 1. Prove that the sum of the three angles of a triangle is equal to two right angles; and that the sum of all the interior angles of a polygon ofя sides is equal to (n — 2) times...
Uten tilgangsbegrensning - Om denne boken