Elements of GeometryGinn, Heath & Company, 1884 |
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Σελίδα vi
... one - half , if the use of the symbols employed in this book be permitted . PHILLIPS EXETER ACADEMY , January , 1879 . G. A. W. CONTENTS . PLANE GEOMETRY . BOOK I. RECTILINEAR FIGURES . vi PREFACE .
... one - half , if the use of the symbols employed in this book be permitted . PHILLIPS EXETER ACADEMY , January , 1879 . G. A. W. CONTENTS . PLANE GEOMETRY . BOOK I. RECTILINEAR FIGURES . vi PREFACE .
Σελίδα 66
... half their sum . A F E B H Let SO be the straight line joining the middle points of the non - parallel sides of the ... one equal respectively to a side and two § 107 adj . of the other ) . and .. FECH , OF OH , ( being homologous 66 ...
... half their sum . A F E B H Let SO be the straight line joining the middle points of the non - parallel sides of the ... one equal respectively to a side and two § 107 adj . of the other ) . and .. FECH , OF OH , ( being homologous 66 ...
Σελίδα 72
... one of the sides , show that it bisects the other also ; and that the portion of it intercepted between the two sides is equal to one half the base . 10. ABCD is a parallelogram , E and F the middle points of AD and BC respectively ...
... one of the sides , show that it bisects the other also ; and that the portion of it intercepted between the two sides is equal to one half the base . 10. ABCD is a parallelogram , E and F the middle points of AD and BC respectively ...
Σελίδα 73
... one half the circumference , as A M B , Fig . 2 . 166. DEF . A Chord of a circle is any straight line having its extremities in the circumference , as A B , Fig . 3 . Every chord subtends two arcs whose sum is the cir- cumference . Thus ...
... one half the circumference , as A M B , Fig . 2 . 166. DEF . A Chord of a circle is any straight line having its extremities in the circumference , as A B , Fig . 3 . Every chord subtends two arcs whose sum is the cir- cumference . Thus ...
Σελίδα 74
... one half the circle , as A D C , Fig . 1 . 169. DEF . A Sector of a circle is a portion of the circle rnclosed by two radii and the arc which they intercept , as A CP , Fig . 2 . 170. DEF . A Tangent is a straight line which touches the ...
... one half the circle , as A D C , Fig . 1 . 169. DEF . A Sector of a circle is a portion of the circle rnclosed by two radii and the arc which they intercept , as A CP , Fig . 2 . 170. DEF . A Tangent is a straight line which touches the ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
A B C AABC ABCD adjacent angles alt.-int altitude apothem arc A B bisect centre circumference circumscribed coincide COROLLARY describe an arc diagonals diameter divided Draw equal arcs equal distances equal respectively equiangular polygon equilateral equilateral polygon equivalent exterior angles figure given line given point given polygon greater homologous sides hypotenuse isosceles triangle Let A B Let ABC limit line A B Mailing price measured by arc middle point number of sides parallelogram perimeter perpendicular PHILLIPS EXETER ACADEMY plane PROBLEM prove Q. E. D. PROPOSITION quadrilateral radii radius equal ratio rect rectangles regular inscribed regular polygon required to construct rhombus right angles right triangle SCHOLIUM segment sides of equal sides of similar similar polygons subtend tangent THEOREM third side triangle ABC vertex vertices Wentworth