Jacobs Geometry
Contents 4 sections

Geometry — Markdown Edition

A complete Markdown conversion of Harold R. Jacobs, Geometry: Seeing, Doing, Understanding (3rd edition), made from the chapter PDFs in the parent folder. The source files are page scans, so the text was transcribed from the page images rather than copied from an OCR layer.

Contents

File Book pages Section
Chapter_00_Front_Matter.html i–xiv Title, copyright, contents, forewords, letter to the student
Chapter_00_Introduction.html 1–6 Euclid, the Surfer, and the Spotter; inductive reasoning
Chapter_01.html 7–40 An Introduction to Geometry
Chapter_02.html 41–76 The Nature of Deductive Reasoning
Chapter_03.html 77–130 Lines and Angles
Chapter_04.html 131–182 Congruence
Chapter_05.html 183–210 Inequalities
Chapter_06.html 211–256 Parallel Lines
Chapter_07.html 257–296 Quadrilaterals
Chapter_08.html 297–329 Transformations
Chapter_08_Midterm_Review.html 330–336 Midterm Review
Chapter_09.html 337–376 Area
Chapter_10.html 377–426 Similarity
Chapter_11.html 427–482 The Right Triangle
Chapter_12.html 483–528 Circles
Chapter_13.html 529–570 The Concurrence Theorems
Chapter_14.html 571–616 Regular Polygons and the Circle
Chapter_15.html 617–688 Geometric Solids
Chapter_16.html 689–717 Non-Euclidean Geometries
Chapter_16_Final_Review.html 718–727 Final Review
Appendices.html 728–780 Glossary, formulary, postulates and theorems, answers, credits, index

788 marked pages, 2,377 figures, about 236,000 words.

Layout

Markdown/
  Chapter_NN.md      one file per chapter or review section
  Appendices.md
  figures/chNN/      figures for that chapter
  figures/appx/      figures for the appendices

Every figure is cropped from a 360 dpi render of the source scan, colour corrected and saved as JPEG. The book’s own caption is kept as an italic line under the image, and the image alt text gives a short factual description so the figure still makes sense in a plain-text reader or if the image fails to load.

Conventions

  • <!-- page N --> marks the start of a printed book page, so any passage can be traced back to the PDF. Front matter uses <!-- page N (front matter) -->.
  • Headings follow the book: ## for lessons and major sections, ### for exercise sets, constructions, definitions, and theorems.
  • Key terms are bold where the book introduces them; emphasis and book titles are italic.
  • Exercises keep the book’s numbering, including the restarts at each Set and the printed “(continued)” items.
  • Formulas, fractions, and algebra reviews use LaTeX ($...$, $$...$$). Symbols such as ∠, °, ×, −, △, and √ are kept as Unicode.
  • Two-column pages were reflowed: the left column is read fully, then the right, and sentences that continue across columns or pages are merged.
  • Handwritten teacher annotations in the scan margins are not transcribed. Printed oddities, typos, and unusual numbering are preserved as printed.
  • Tables that were printed as text (proofs, property lists, answer charts) were rebuilt as Markdown tables; diagrams and facsimile pages were cropped.

Rebuilding

Chapters were assembled from per-page Markdown sources containing figure tags:

@@FIG ch01_p009_f1 0.115 0.050 0.330 0.122 | Alt text @@

The four numbers are fractions of the page width and height, so they do not depend on the render resolution. An assembler script crops each figure from the 360 dpi page image and writes the chapter file.