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# RightStart Geometry Lessons [SCM]

## by Joan A. CotterAuthor

Basic geometry for the middle school child (and older) using the tool set of drawing board, T-square, triangles, compass, and angle ruler. Use with Geometry worksheets and solutions books.

#### Tags:

Resource Type
Book
Print Status
In Print
Lessons
142
Publisher
Activities for Learning
Edition
Preliminary Edition
2005
URL
http://www.alabacus.com/

### Lessons

• 1 Getting Started
• 2 Drawing Diagonals
• 3 Drawing Stars
• 4 Equilateral Triangles into Halves
• 5 Equilateral Triangles into Sixths & Thirds
• 6 Equilateral Triangles into Fourths & Eighths
• 7 Equilateral Triangles into Ninths
• 8 Hexagrams and Solomon's Seal
• 9 Equilateral Triangles into Twelfths
• 10 Measuring Perimeter in Centimeters
• 11 Drawing Parallelograms in Centimeters
• 12 Measuring Perimeter in Inches
• 13 Drawing Parallelograms in Inches
• 14 Drawing Rectangles
• 15 Drawing Rhombuses
• 16 Drawing Squares
• 18 The Fraction Chart
• 19 Patterns in Fractions
• 20 Measuring With Sixteenths
• 21 A Fraction of Geometry Figures
• 22 Making the Whole
• 23 Ratios and Nested Squares
• 24 Square Centimeters
• 25 Square Inches
• 26 Area of a Rectangle
• 27 Comparing Areas of Rectangles
• 28 Product of a Number and Two More
• 29 Area of Consecutive Squares
• 30 Perimeter Formula for Rectangles
• 31 Area of a Parallelogram
• 32 Comparing Calculated Areas of Parallelograms
• 33 Area of a Triangle
• 34 Comparing Calculated Areas of Triangles
• 35 Converting Inches to Centimeters
• 36 Name that Figure
• 37 Finding the Areas of More Triangles
• 38 Area of Trapezoids
• 39 Area of Hexagons
• 40 Area of Octagons
• 41 Ratios of Areas
• 42 Measuring Angles
• 43 Supplementary and Vertical Angles
• 44 Measure of the Angles in a Polygon
• 45 Classifying Triangles by Sides and Angles
• 46 External Angles of a Triangle
• 47 Angles Formed With Parallel Lines
• 48 Triangles With Congruent Sides (SSS)
• 49 Other Congruent Triangles (SAS, ASA)
• 50 Side and Angle Relationships in Triangles
• 51 Medians in Triangles
• 52 More About Medians in Triangles
• 53 Midpoints in a Triangle
• 54 Rectangles Inscribed in a Triangle
• 55 Connecting Midpoints in a Quadrilateral
• 56 Introducing the Pythagorean Theorem
• 57 Squares on Right Triangles
• 58 Proofs of the Pythagorean Theorem
• 59 Finding Square Roots
• 60 More Right Angle Problems
• 61 The Square Root Spiral
• 62 Circle Basics
• 63 Ratio of Circumference to Diameter
• 64 Inscribed Polygons
• 65 Tangents to Circles
• 66 Circumscribed Polygons
• 67 Pi, a Special Number
• 68 Circle Designs
• 69 Rounding Edges with Tangents
• 70 Tangent Circles
• 71 Bisecting Angles
• 72 Perpendicular Bisectors
• 73 The Amazing Nine-Point Circle
• 74 Drawing Arcs
• 75 Angles 'n Arcs
• 76 Arc Length
• 77 Area of a Circle
• 78 Finding the Area of a Circle
• 79 Finding More Area
• 80 Pizza Problems
• 81 Revisiting Tangrams
• 82 Aligning Objects
• 83 Reflecting
• 84 Rotating
• 85 Making Wheel Designs
• 86 Identifying Reflections & Rotations
• 87 Translations
• 88 Transformations
• 89 Double Reflections
• 90 Finding the Line of Reflection
• 91 Finding the Center of Rotation
• 92 More Double Reflections
• 93 Angles of Incidence and Reflection
• 94 Lines of Symmetry
• 95 Rotation Symmetry
• 96 Symmetry Connections
• 97 Frieze Patterns
• 98 Introduction to Tessellations
• 99 Two Pentagon Tessellations
• 100 Regular Tessellations
• 101 Semiregular Tessellations
• 102 Demiregular Tessellations
• 103 Pattern Units
• 104 Dual Tessellations
• 105 Tartan Plaids
• 106 Tessellating Triangles
• 108 Escher Tessellations
• 109 Tessellation Summary & Mondrian Art
• 110 Box Fractal
• 111 Sierpinski Triangle
• 112 Koch Snowflake
• 113 Cotter Tens Fractal
• 114 Similar Triangles
• 115 Fractions on the Multiplication Table
• 116 Cross Multiplying on the Multiplication Table
• 117 Measuring Heights
• 118 Golden Ratio
• 119 More Golden Goodies
• 120 Fibonacci Sequence
• 121 Fibonacci Numbers and Phi
• 122 Golden Ratios and Other Ratios Around Us
• 123 Napoleon's Theorem
• 124 Pick's Theorem
• 125 Pick's Theorem With the Stomachion
• 126 Pick's Theorem and Pythagorean Theorem
• 127 Estimating Area with Pick's Theorem
• 128 Distance Formula
• 129 Euler Paths
• 130 Using Ratios to Find Sides of Triangles
• 131 Basic Trigonometry
• 132 Solving Trig Problems
• 133 Comparing Calculators
• 134 Solving Problems With a Scientific Calculator
• 135 Angle of Elevation
• 136 More Angle Problems
• 137 Introduction to Sine Waves
• 138 Solids and Polyhedrons
• 139 Nets of Cubes
• 140 Volume of Cubes
• 141 Volume of Boxes
• 142 Volume of Prisms
• 143 Diagonals in a Rectangular Prism
• 144 Cylinders
• 145 Cones
• 146 Pyramids
• 147 Polygons 'n Polyhedrons
• 148 Tetrahedron in a Cube
• 149 Platonic Solids
• 150 View of the Platonic Solids
• 151 Duals of the Platonic Solids
• 152 Surface Area and Volume of Spheres
• 153 Plane Symmetry in Polyhedra
• 154 Rotating Symmetry in Polyhedra
• 155 Circumscribed Platonic Solids
• 156 Cubes in a Dodecahedron
• 157 Stella Octangula
• 158 Truncated Tetrahedra
• 159 Truncated Octahedron
• 160 Truncated Isocahedron
• 161 Cuboctahedron
• 162 Rhombicuboctahedron
• 163 Icosidodecahedron
• 164 Snub Polyhedra
• 165 Archimedean Solids