### Περιεχόμενα

 Solids pp 1 2 Measurement of straight lines pp 25 2 SCALE DRAWING I not requiring the use of parallels 13 PARALLEL STRAIGHT LINES 20 ANGLES OF A TRIANGLE OF A POLYGON 30 CONSTRUCTION OF TRIANGLES AND POLYGONS 36 PRACTICAL CONSTRUCTIONS 48 SCALE DRAWING III 55 44 62
 Common tangents to two circles 159 THE CIRCLE ANGLE PROPERTIES 161 AREA OF CIRCLE 175 Miscellaneous Exercises III 183 SOLIDS OF UNIFORM CROSS 197 THE CONE 208 THE SPHERE 220 THE REGULAR SOLIDS 226

 CONTINUOUS CHANGE OF A FIGURE 71 38 78 Miscellaneous Exercises I 80 SIMILAR FIGURES 86 76 95 AREA 101 Area of any rectilinear figure 102 To construct a triangle equivalent to a given quadrilateral 108 69 113 THE THEOREM OF PYTHAGORAS 114 Miscellaneous Exercises II 120 THE CIRCLE ARCS 135 inscribed polygon p 140 regular polygons 143 CONTACT OF CIRCLES COMMON TANGENTS 152
 Revision Papers B 234 INDEXLIST OF DEFINITIONS 251 Introductory note 1 1 Playfairs axiom 7 i The opposite angles of a parallelogram are equal 21 Of all the straight lines that can be drawn to 28 FX 25 37 29 38 EXTENSION OF PYTHAGORAS THEOREM In an obtuse 53 i equal chords are equidistant from the centres 59 The tangent at any point of a circle and the radius 60 73 65 If a straight line touch a circle and from the point 66

### Δημοφιλή αποσπάσματα

Σελίδα xii - If two triangles have two angles of the one equal to two angles of the other, each to each, and also one side of the one equal to the corresponding side of the other, the triangles are congruent.