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### Inhalt

 Abschnitt 1 1 Abschnitt 2 15 Abschnitt 3 19 Abschnitt 4 20 Abschnitt 5 21 Abschnitt 6 31 Abschnitt 7 46
 Abschnitt 8 52 Abschnitt 9 56 Abschnitt 10 65 Abschnitt 11 78 Abschnitt 12 81 Abschnitt 13 83 Abschnitt 14 93

### Beliebte Passagen

Seite 33 - A circle is a plane figure bounded by a curved line, every point of which is equally distant from a point within called the center.
Seite 65 - The square described on the hypothenuse of a right-angled triangle is equivalent to the sum of the squares described on the other two sides.
Seite 73 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. A D A' Hyp. In triangles ABC and A'B'C', To prove AABC A A'B'C' A'B' x A'C ' Proof. Draw the altitudes BD and B'D'.
Seite 55 - In any proportion, the product of the means is equal to the product of the extremes.
Seite 91 - The perimeters of two regular polygons of the same number of sides, are to each other as their homologous sides, and their areas are to each other as the squares of those sides (Prop.
Seite 56 - In a series of equal ratios, any antecedent is to its consequent, as the sum of all the antecedents is to the sum of all the consequents. Let a: 6 = c: d = e :/. Then, by Art.
Seite 85 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Seite 61 - The area of a parallelogram is equal to the product of its base and its height: A = bx h.
Seite 18 - Conversely, if two angles of a triangle are equal, the sides opposite them are also equal, and the triangle is isosceles.
Seite 63 - From this proposition it is evident, that the square described on the difference of two lines is equivalent to the sum of the squares described on the lines respectively, minus twice the rectangle contained by the lines.