Elements of
The Elements of Perspective arranged for the use of schools and intended to be read in connection with the first three books of Euclid
作者：Ruskin, John, 1819-1900
体例：题 章数：91
字数：95,774 来源：Project Gutenberg
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- 原文溯源
cache/epub/60816/pg60816.txt（Project Gutenberg）
章节目录
共 91 题- THE ELEMENTS OF PERSPECTIVE
- ARRANGED FOR THE USE OF SCHOOLS
- CONTENTS.
- Introduction 1
- APPENDIX.
- PREFACE.
- THE ELEMENTS OF PERSPECTIVE.
- INTRODUCTION.
- PROBLEM I.
- TO FIX THE POSITION OF A GIVEN POINT.[8]
- PROBLEM II.
- TO DRAW A RIGHT LINE BETWEEN TWO GIVEN POINTS.
- COROLLARY I.
- COROLLARY II.
- COROLLARY III.
- PROBLEM III.
- TO FIND THE VANISHING-POINT OF A GIVEN HORIZONTAL LINE.
- COROLLARY I.
- Find the position of the point _A_ in _a_. (Problem I.)
- Find the vanishing-point of _AB_ in _V_. (Problem III.)
- Then _ab_ is the line required.[15]
- COROLLARY II.
- That is to say, _aR_ is the sight-magnitude of _AB_.[16]
- COROLLARY III.
- COROLLARY IV.
- PROBLEM IV.
- TO FIND THE DIVIDING-POINTS OF A GIVEN HORIZONTAL LINE.
- PROBLEM V.
- COROLLARY I.
- COROLLARY II.
- PROBLEM VI.
- Draw the line _AB_. (Problem V.)
- PROBLEM VII.
- Draw first the triangle _ABC_. (Problem VI.)
- COROLLARY.
- PROBLEM VIII.
- COROLLARY I.
- COROLLARY II.
- COROLLARY III.
- PROBLEM IX.
- COROLLARY.
- A less complicated construction will, however, be given hereafter.[18]
- PROBLEM X.
- PROBLEM XI.
- TO DRAW ANY CURVE IN A HORIZONTAL OR VERTICAL PLANE.
- COROLLARY.
- PROBLEM XII.
- COROLLARY.
- PROBLEM XIII.
- Then _IKLM_ is the smaller square, inscribed as required.[23]
- COROLLARY.
- PROBLEM XIV.
- COROLLARY I.
- COROLLARY II.
- COROLLARY III.
- PROBLEM XV.
- TO DRAW AN INCLINED LINE, GIVEN IN POSITION AND MAGNITUDE.
- OBSERVATION.
- PROBLEM XVI.
- TO FIND THE VANISHING-POINT OF A GIVEN INCLINED LINE.
- PROBLEM XVII.
- TO FIND THE DIVIDING-POINTS OF A GIVEN INCLINED LINE.
- Then _X_ and _Y_ are the dividing-points of the inclined line.[27]
- PROBLEM XVIII.
- PROBLEM XIX.
- PROBLEM XX.
- APPENDIX.
- I.
- PRACTICE AND OBSERVATIONS.
- II.
- DEMONSTRATIONS.
- I.
- PRACTICE AND OBSERVATIONS ON THE PRECEDING PROBLEMS.
- PROBLEM I.
- PROBLEM IX.
- PROBLEM X.
- PROBLEM XI.
- PROBLEM XIV.
- PROBLEM XVI.
- PROBLEM XVIII.
- II.
- DEMONSTRATIONS WHICH COULD NOT CONVENIENTLY BE INCLUDED IN THE TEXT.
- I.
- THE SECOND COROLLARY, PROBLEM II.
- II.
- THE THIRD COROLLARY, PROBLEM III.
- III.
- ANALYSIS OF PROBLEM XV.
- THE END.
- Transcriber’s Note
- End of Project Gutenberg's The Elements of Perspective, by John Ruskin