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Mathematics & statistics18 textbooks →Physics & chemistry8 textbooks →Life sciences1 textbook →Computer science12 textbooks →Economics & business6 textbooks →Psychology & social sciences3 textbooks →Humanities & academic writing22 textbooks →

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Junior extension: words and numbers

15 selected units on vocabulary, word formation, arithmetic and percentages. Intended for confident English readers with teacher or dictionary support. These selections do not reclassify the full books as junior textbooks.

0 selected editions · 15 selected sections

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Questions in philosophy

Explore arguments, knowledge, ethics, mind, religion and aesthetics through six introductory philosophy books. Start with a topic that interests you; listening is available only where the chapter shows a listening option.

6 selected editions

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Mathematics and computing

A route from arithmetic and everyday mathematics to functions, statistics, algorithms and open source collaboration. Check each book's prerequisites; the algorithms text assumes programming experience.

6 selected editions

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Chapter matches

2588 chapter matches · Matches reviewed table-of-contents titles.

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Introduction

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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1 Preliminaries

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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2 Axioms

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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3 Half-planes

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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4 Congruent triangles

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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5 Perpendicular lines

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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6 Similar triangles

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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7 Parallel lines

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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8 Triangle geometry

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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9 Inscribed angles

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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10 Inversion

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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11 Neutral plane

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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12 Hyperbolic plane

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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13 Geometry of the h-plane

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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14 Affine geometry

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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15 Projective geometry

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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16 Spherical geometry

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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17 Projective model

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction

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18 Complex coordinates

Euclidean plane and its relatives · arXiv version 19 (May 21, 2021) · College introduction