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Geometry Essentials for Dummies

Geometry Essentials for Dummies (Paperback)

마크 라이언 (지은이)
  |  
For Dummies
2019-05-14
  |  
20,830원

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Geometry Essentials for Dummies

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· 제목 : Geometry Essentials for Dummies (Paperback) 
· 분류 : 외국도서 > 과학/수학/생태 > 수학 > 기하학 > 대수기하학
· ISBN : 9781119590446
· 쪽수 : 192쪽

목차

Introduction 1

About This Book 1

Conventions Used in This Book 2

Foolish Assumptions 2

Icons Used in This Book 3

Where to Go from Here 3

Chapter 1: An Overview of Geometry 5

The Geometry of Shapes 6

One-dimensional shapes 6

Two-dimensional shapes 6

Three-dimensional shapes 6

Geometry Proofs 6

Am I Ever Going to Use This? 7

When you’ll use your knowledge of shapes 7

When you’ll use your knowledge of proofs 8

Getting Down with Definitions 9

A Few Points on Points 11

Lines, Segments, and Rays 12

Horizontal and vertical lines 12

Doubling up with pairs of lines 13

Investigating the Plane Facts 14

Everybody’s Got an Angle 14

Five types of angles 15

Angle pairs 16

Bisection and Trisection 18

Segments 18

Angles 18

Chapter 2: Geometry Proof Starter Kit 21

The Lay of the (Proof) Land 21

Reasoning with If-Then Logic 23

If-then chains of logic 24

Definitions, theorems, and postulates 25

Bubble logic 26

Complementary and Supplementary Angles 27

Addition and Subtraction 29

Addition theorems 29

Subtraction theorems 33

Like Multiples and Like Divisions 34

Congruent Vertical Angles 36

Transitivity and Substitution 37

Chapter 3: Tackling a Longer Proof 41

Making a Game Plan 42

Using All the Givens 42

Using If-Then Logic 43

Chipping Away at the Problem 45

Working Backward 47

Filling in the Gaps 49

Writing out the Finished Proof 49

Chapter 4: Triangle Fundamentals 51

Taking in a Triangle’s Sides 51

Scalene triangles 52

Isosceles triangles 52

Equilateral triangles 52

Triangle Classification by Angles 52

The Triangle Inequality Principle 53

Sizing up Triangle Area 54

A triangle’s altitude or height 54

Determining a triangle’s area 56

Regarding Right Triangles 57

The Pythagorean Theorem 58

Pythagorean Triple Triangles 60

The Fab Four triangles 61

Families of Pythagorean triple triangles 61

Two Special Right Triangles 64

The 45 - 45 - 90 triangle 64

The 30 - 60 - 90 triangle 66

Chapter 5: Congruent Triangle Proofs 69

Proving Triangles Congruent 69

SSS: The side-side-side method 70

SAS: Side-angle-side 72

ASA: The angle-side-angle tack 74

AAS: Angle-angle-side 74

Last but not least: HLR 75

Taking the Next Step with CPCTC 75

Defining CPCTC 76

Tackling a CPCTC proof 76

The Isosceles Triangle Theorems 79

The Two Equidistance Theorems 81

Determining a perpendicular bisector 81

Using a perpendicular bisector 83

Chapter 6: Quadrilaterals 85

Parallel Line Properties 85

Parallel lines with a transversal 85

The transversal theorems 87

The Seven Special Quadrilaterals 89

Working with Auxiliary Lines 90

The Properties of Quadrilaterals 93

Properties of the parallelogram 93

Properties of the three special parallelograms 95

Properties of the kite 98

Properties of the trapezoid and the isosceles trapezoid 99

Proving That You’ve Got a Particular Quadrilateral 100

Proving you’ve got a parallelogram 100

Proving that you’ve got a rectangle, rhombus, or square 103

Proving that you’ve got a kite 104

Chapter 7: Polygon Formulas 107

The Area of Quadrilaterals 107

Quadrilateral area formulas 108

Why the formulas work 108

Trying a few area problems 110

The Area of Regular Polygons 113

The polygon area formulas 114

Tackling an area problem 114

Angle and Diagonal Formulas 115

Interior and exterior angles 116

A polygon angle problem 117

Criss-crossing with diagonals 118

Chapter 8: Similarity 119

Similar Figures 119

Defining similar polygons 119

How similar figures line up 121

Solving a similarity problem 122

Proving Triangles Similar 124

Tackling an AA proof 125

Using SSS~ 126

An SAS~ proof 127

Splitting Right Triangles with the Altitude-on-Hypotenuse Theorem 128

More Proportionality Theorems 130

The Side-Splitter Theorem 130

The Angle-Bisector Theorem 132

Chapter 9: Circle Basics 135

Radii, Chords, and Diameters 135

Five circle theorems 136

Using extra radii 136

Arcs and Central Angles 138

Tangents 138

The Pizza Slice Formulas 140

Determining arc length 140

Sector and segment area 141

The Angle-Arc Formulas 143

Angles on a circle 144

Angles inside a circle 144

Angles outside a circle 145

Keeping the formulas straight 146

The Power Theorems 147

The Chord-Chord Theorem 148

The Tangent-Secant Theorem 149

The Secant-Secant Theorem 149

Condensing the power theorems into a single idea 150

Chapter 10: 3-D Geometry 151

Flat-Top Figures 151

Pointy-Top Figures 154

Spheres 159

Chapter 11: Coordinate Geometry 161

The Coordinate Plane 161

Slope, Distance, and Midpoint 162

The slope dope 162

The distance formula 164

The midpoint formula 165

Trying out the formulas 166

Equations for Lines and Circles 167

Line equations 168

The circle equation 168

Chapter 12: Ten Big Reasons to Use in Proofs 171

The Reflexive Property 171

Vertical Angles are Congruent 171

The Parallel-Line Theorems 172

Two Points Determine a Line 172

All Radii are Congruent 173

If Sides, Then Angles 173

If Angles, Then Sides 173

Triangle Congruence 173

CPCTC 174

Triangle Similarity 174

Index 175

저자소개

마크 라이언 (지은이)    정보 더보기
캐나다 토론토에 위치한 인택트(Intact)라는 보험사의 데이터 과학 매니저다. 머신러닝 부트캠프를 개최해 참가자가 실습을 통해 머신러닝의 세계를 경험하는 기회를 제공하는 등 머신러닝의 유용성을 공유하는 일에 열정적이다. 정형 데이터에 내재된 가치를 찾아내는 딥러닝의 잠재력, 그리고 챗봇과 자율 주행 자동차의 가능성에 관심이 많다. 워털루대학교에서 수학 학사학위를, 토론토대학교에서 컴퓨터 과학 석사학위를 받았다.
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