### Фй лЭне пй чсЮуфет -Уэнфбоз ксйфйкЮт

Ден енфпрЯубме ксйфйкЭт уфйт ухнЮиейт фпрпиеуЯет.

### Ресйечьменб

 DEFINITIONS 1 PARTICULAR AXIOMS 7 ANGLE MEASUREME 15 TRIANGLES 24 ADVANCE THEOREMS 32 35 52 80 94 117 32 CIRCLES 38 RATIO AND PROPORTION 54 PROPORTIONAL LINES 68
 AREAS 84 REGULAR POLYGONS AND CIRCLES 98 MAXIMA AND MINIMA 124 PROBLEMS OF CONSTRUCTION 133 OPTIONAL PROBLEMS FOR ADVANCE WORK 143 PAGE 155 APPENDIX 168 SYMMETRY 175

### ДзмпцйлЮ брпурЬумбфб

УелЯдб 38 - PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the centre.
УелЯдб 78 - In any triangle, the square of the side opposite an acute angle is equal to the sum of the squares of the other two sides, minus twice the product of one of these sides and the projection of the other side upon it.
УелЯдб 80 - In any triangle, the product of any two sides is equal to the product of the segments of the third side formed by the bisector of the opposite angle, plus the square of the bisector.
УелЯдб 3 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
УелЯдб 71 - A Polygon of three sides is called a triangle ; one of four sides, a quadrilateral; one of five sides, a pentagon; one of six sides, a hexagon; one of seven sides, a heptagon; one of eight sides, an octagon ; one of ten sides, a decagon ; one of twelve sides, a dodecagon, &c.
УелЯдб 25 - In a right triangle, the side opposite the right angle is called the hypotenuse and is the longest side.
УелЯдб 80 - In any quadrilateral, the sum of the squares of the four sides is equal to the sum of the squares of the diagonals plus four times the square of the line joining the middle points of the diagonals.
УелЯдб 79 - In any triangle the square of the side opposite an acute angle is equal to the sum of the squares of the other two sides diminished by twice the product of one of those sides and the projection of the other upon that side.
УелЯдб 70 - Sines that the bisector of an angle of a triangle divides the opposite side into parts proportional to the adjacent sides.
УелЯдб 72 - The sum of the interior angles of a polygon is equal to two right angles, taken as many times less two as the figure has sides.