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### Continguts

 SYLLABUS OF GEOMETRICAL CONSTRUCTIONS 9 The Straight Line 15 Triangles 25 Parallels and Parallelograms 49
 Problems 69 Problems 75 Definitions 84

### Passatges populars

Pŕgina 27 - 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.
Pŕgina 70 - 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.
Pŕgina 56 - ... is equal to twice as many right angles as the polygon
Pŕgina 101 - Prove that parallelograms on the same base and between the same parallels are equal in area.
Pŕgina 35 - Any two sides of a triangle are together greater than the third side.
Pŕgina 26 - The lines drawn from the extremities of the base of an isosceles triangle to the middle points of the opposite sides are equal.
Pŕgina 70 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Pŕgina 85 - The locus of a point at a given distance from a given point is the circumference described from the point with the given distance as radius.
Pŕgina 42 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Pŕgina 110 - Iff 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.