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### Contenido

 Sección 1 1 Sección 2 37 Sección 3 56 Sección 4 62 Sección 5 69 Sección 6 70 Sección 7 73 Sección 8 75
 Sección 11 139 Sección 12 145 Sección 13 152 Sección 14 168 Sección 15 187 Sección 16 193 Sección 17 215 Sección 18

 Sección 9 93 Sección 10 107
 Sección 19 Sección 20

### Pasajes populares

Página 93 - If two triangles have two angles of the one equal to two angles of the other, each to each ; and one side equal to one side, viz. either the sides adjacent to the equal...
Página 101 - 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 equal to two right angles.
Página 157 - If a straight line be divided into any two parts, four times the rectangle contained by the whole line, and one of the parts, together with the square of the other part, is equal to the square of the straight line which is made up of the whole and that part.
Página 41 - A segment of a circle, is the figure contained by a straight line and the circumference which it cuts off.
Página 93 - If two triangles have two sides of the one respectively equal to two sides of the other, and the contained angles supplemental, the two triangles are equal.
Página 96 - IF a straight line fall upon two parallel straight lines, it makes the alternate angles equal to one another; and the exterior angle equal to the interior and opposite upon the same side; and likewise the two interior angles upon the same side together equal to two right angles...
Página 176 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Página 18 - Pythagoras' theorem states that the square of the length of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the lengths of the other two sides.
Página 138 - If the square described upon one of the sides of a triangle, be equal to the squares described upon the other two sides of it ; the angle contained by these two sides is a right angle.
Página 44 - LET it be granted that a straight line may be drawn from any one point to any other point.