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FlexBook: CK-12 Geometry
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This chapter covers undefined terms, defined terms, basic postulates of points, lines and planes; distances on a coordinate grid; complementary and supplementary angles; vertical angles; linear pairs and classification of polygons.
Categories: Geometry , Plane Geometry , Angles , Polygons
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: space , isosceles triangle , non-collinear , coordinate grid
Created: Oct. 06, 2009 03:27 PM
Last Edited: Jun. 16, 2010 02:27 PM
Basics of Geometry
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This chapter covers inductive reasoning, deductive reasoning, conditional statements, properties of equality and two-column proofs.
Categories: Geometry , Geometric Proof , Plane Geometry , Angles
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: vertical angles , properties of equality , converse , inductive reasoning
Created: Oct. 06, 2009 03:27 PM
Last Edited: Jun. 16, 2010 02:27 PM
Reasoning and Proof
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This chapter covers the parallel line postulate, the perpendicular line postulate, and angles formed by two parallel lines and a non-perpendicular transversal.
Categories: Geometry , Algebraic Geometry , Geometric Proof , Plane Geometry
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: alternate interior angles , non-euclidean geometry , euclidean geometry , slope
Created: Oct. 06, 2009 03:27 PM
Last Edited: Jun. 16, 2010 02:27 PM
Parallel and Perpendicular Lines
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This chapter covers the Triangle Sum theorem, triangle congruence, the SSS and ASA postulates, the AAS congruence theorem, two-column and flow proofs, the HL congruence theorem, AAA and SSA relationships, and isosceles and equilateral triangles.
Categories: Plane Geometry , Angles , Transformations , Rotation
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: distance formula , base angles theorem , corresponding sides , obtuse triangle
Created: Oct. 06, 2009 03:27 PM
Last Edited: Jun. 16, 2010 02:27 PM
Congruent Triangles
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This chapter covers the midsegment theorem, the perpendicular bisector theorem, the angle bisector theorem, the concurrency of medians theorem, Napoleon's theorem, the triangle inequality theorem and SAS & SSS triangle inequality theorems.
Categories: Geometric Proof , Plane Geometry , Angles , Triangles
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: concurrency of altitudes theorem , 30-60-90 triangle , altitude , orthocenter
Created: Oct. 06, 2009 03:28 PM
Last Edited: Jun. 16, 2010 02:27 PM
Relationships Within Triangles
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This chapter covers interior angles of convex quadrilaterals, classifying quadrilaterals, properties of parallelograms, properties of rhombi, rectangles and squares, biconditional statements and properties of trapezoids.
Categories: Plane Geometry , Angles , Polygons , Congruence
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: interior angles , biconditional statements , slope , counterexample
Created: Oct. 06, 2009 03:28 PM
Last Edited: Jun. 16, 2010 02:27 PM
Quadrilaterals
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This chapter covers ratio and proportion, properties of similar polygons, AAA & AA rules for similar triangles, using SSS & SAS to solve problems about similar triangles, identifying proportional segments in triangles and similarity transformations.
Categories: Algebraic Geometry , Fractal Geometry , Plane Geometry , Angles
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: sss , triangle proportionality theorem , extremes , cross multiplication
Created: Oct. 06, 2009 03:28 PM
Last Edited: Aug. 01, 2011 02:47 PM
Similarity
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This chapter covers using the Pythagorean theorem when working with right triangles, classification of triangles, the converse of the Pythagorean theorem, using the geometric mean, properties of special right triangles, and trigonometric ratios.
Categories: Geometric Proof , Plane Geometry , Triangles , Properties
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: altitude , obtuse triangle , equilateral triangle , legs
Created: Oct. 06, 2009 03:28 PM
Last Edited: Jun. 16, 2010 02:27 PM
Right Triangle Trigonometry
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This chapter covers relationships between congruent and similar circles, the equation of a circle, tangent lines, arc measures, chords, inscribed angles, and angles formed by chords, secants and tangents.
Categories: Geometry , Analytic Geometry , Cartesian Coordinates , Circles
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: minor arc , common external tangents , similar circles , diameter
Created: Oct. 06, 2009 03:28 PM
Last Edited: Jun. 16, 2010 02:27 PM
Circles
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This chapter covers finding the area for specific types of polygons, using scale drawings or models, finding the circumference of a circle, areas of circles & sectors, calculating the areas & perimeters of regular polygons and geometric probability.
Categories: Analytic Geometry , Cartesian Coordinates , Plane Geometry , Circles
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: scale drawings , diameter , kite , regular polygons
Created: Oct. 06, 2009 03:28 PM
Last Edited: Aug. 01, 2011 02:47 PM
Perimeter and Area
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This chapter covers the surface area and volume of prisms, cylinders, pyramids and spheres.
Categories: Geometry , Solid Geometry , Cones , Cylinders
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: lateral area , edge , cylinder , prism
Created: Oct. 06, 2009 03:28 PM
Last Edited: Jun. 16, 2010 02:27 PM
Surface Area and Volume
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This chapter covers transformations of figures in two-dimensional space including translations, reflections, rotations and dilations.
Categories: Geometry , Plane Geometry , Tilings and Tessellations , Transformations
Grades: 9 , 10 , 11
Organizations: CK-12 Foundation
Tags: vector , tessellation , bilateral symmetry , rotational symmetry
Created: Oct. 06, 2009 03:28 PM
Last Edited: Aug. 01, 2011 02:47 PM
Transformations
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CK-12 Geometry
CK-12 Geometry
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Created: Oct. 06, 2009 03:27 PM
Last modified: 6 months, 1 week ago

CK-12 Foundation's Geometry FlexBook is a clear presentation of the essentials of geometry for the high school student. Topics include: Proof, Congruent Triangles, Quadrilaterals, Similarity, Perimeter & Area, Volume, and Transformations.

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Categories:
Algebraic Geometry
Analytic Geometry
Angles
Cartesian Coordinates
Circles
Cones
Congruence
Congruence
Cylinders
Distance Formula
Geometric Patterns
Geometric Proof
Geometry
Lines and Planes
Mathematics
Measurement
Patterns
Plane Geometry
Polygons
Polyhedra
Prisms
Properties
Properties
Pyramids
Pythagorean Theorem
Reflection
Regular
Rotation
Similarity
Similarity
Solid Geometry
Tilings and Tessellations
Transformations
Translation
Triangles
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License type:
Creative Commons License
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Difficulty:
Intermediate
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Grade:
9
10
11
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State:
CA
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None
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BUILD NUMBER:14974
DEPLOYMENT DATE:2012-01-25 19:35:50 -0800 (Wed, 25 Jan 2012)
PDF ENGINE :1
BIDI ENGINE:1
DATABASE VERSION:1.2.5.2
FB2N VERSION:0.1.105
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[{id:"2264",title:"Basics of Geometry"},{id:"2265",title:"Reasoning and Proof"},{id:"2266",title:"Parallel and Perpendicular Lines"},{id:"2267",title:"Congruent Triangles"},{id:"2268",title:"Relationships Within Triangles"},{id:"2269",title:"Quadrilaterals"},{id:"2270",title:"Similarity"},{id:"2271",title:"Right Triangle Trigonometry"},{id:"2272",title:"Circles"},{id:"2273",title:"Perimeter and Area"},{id:"2274",title:"Surface Area and Volume"},{id:"2275",title:"Transformations"},]