## The school Euclid: comprising the first four books, by A.K. Isbister |

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To avoid the confused appearance produced by the lines being scattered irregularly over the page , as in Mr. Potts's and some other editions , the lines have been printed so as to commence uniformly from the

To avoid the confused appearance produced by the lines being scattered irregularly over the page , as in Mr. Potts's and some other editions , the lines have been printed so as to commence uniformly from the

**side**of the page . Side

To avoid the confused appearance produced by the lines being scattered irregularly over the page , as in Mr. Potts's and some other editions , the lines have been printed so as to commence uniformly from the

To avoid the confused appearance produced by the lines being scattered irregularly over the page , as in Mr. Potts's and some other editions , the lines have been printed so as to commence uniformly from the

**side**of the page . Side 3

Of three - sided figures , an equilateral triangle is that which has three equal

Of three - sided figures , an equilateral triangle is that which has three equal

**sides**. XXV . An isosceles triangle , is that which has only two**sides**equal . XXVI . A scalene triangle , is that which has three unequal**sides**. Side 4

Of four - sided figures , a square is that which has all its

Of four - sided figures , a square is that which has all its

**sides**equal , and all its angles right angles . XXXI . An oblong , is that which has all its angles right angles , but has not all its**sides**equal . XXXII . Side 5

If a straight line meets two straight lines , so as to make the two interior angles on the same

If a straight line meets two straight lines , so as to make the two interior angles on the same

**side**of it , taken together , less than two right angles , these straight lines being continually produoed , shall at length meet upon that ...### Hva folk mener - Skriv en omtale

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The school Euclid: comprising the first four books, by A.K. Isbister Euclides Uten tilgangsbegrensning - 1863 |

The School Euclid: Comprising the First Four Books, Chiefly from the Text of ... A. K. Isbister Ingen forhåndsvisning tilgjengelig - 2009 |

### Vanlige uttrykk og setninger

angle ABC angle BAC angle BCD angle equal assumed base base BC BC is equal bisect centre circle ABC circumference coincide common constr CONSTRUCTION contained DEMONSTRATION describe diameter distance divided double draw Edition equal to AC equilateral and equiangular exterior angle extremity fall figure four given given circle given straight line greater half impossible inscribed join less Let ABC likewise manner meet opposite angles parallel parallelogram pass pentagon perpendicular PROBLEM produced proved Q. E. D. PROP reason rectangle contained References remaining angle right angles segment semicircle shown sides square of AC straight line AC THEOREM touches the circle triangle ABC twice the rectangle wherefore whole

### Populære avsnitt

Side 141 - 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...

Side 35 - 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.

Side 71 - In obtuse-angled triangles, if a perpendicular be drawn from either of the acute angles to the opposite side produced, the square of the side subtending the obtuse angle, is greater than the squares of the sides containing the obtuse angle, by twice the rectangle contained by the side upon which, when produced, the perpendicular falls, and the straight line intercepted without the triangle, between the perpendicular and the obtuse angle. Let ABC be an obtuse-angled triangle, having the obtuse angle...

Side 33 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.

Side 61 - If a straight line be bisected and produced to any point, the rectangle contained by the whole line thus produced and the part of it produced, together with the square of...

Side 43 - Triangles upon equal bases, and between the same parallels, are equal to one another.

Side 27 - ... shall be greater than the base of the other. Let ABC, DEF be two triangles, which have the two sides AB, AC, equal to the two DE, DF, each to each, viz.

Side 77 - An angle in a segment is the angle contained by two straight lines drawn from any point in the circumference of the segment to the extremities of the straight line which is the base of the segment.

Side 15 - The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles.