WITH THESE LESSONS (Click inside the graphic and Press Play Arrow Buttom)

Scroll down to find the lessons

# PLANE GEOMETRY

THEOREMS AND POSTULATES

 CHAPTER 1 BASIC DEFINITIONS, ANGLE RELATIONSHIPS AND ANGLE PAIRS. 1.- Basic Geometric Definitions: Lines, Angles, Planes, Segment Addition Postulate, Midpoint, Distance Formula. 2.- Complementary, Supplementary, Linear Pair, and Vertical Angles: Definitions and Algebraic Proofs with Geometry. 3.- Angle Pairs: Complementary, and Supplementary Angles as Word Problems. 4.- Angle Pairs with Geolegs (manipulatives hands on approach): Complementary, Supplementary and Vertical Angles. 5.- Angle Pairs in Parallel Lines: Corresponding, Alternate Interior and Alternate Exterior, and Consecutive Interior Angles. CHAPTER 2 ANGLE RELATIONSHIPS IN PROOFS, INDUCTIVE AND DEDUCTIVE REASONING. SLOPE. 1.- Inductive and Deductive Reasoning: If - Then Statements, Law of Syllogism and Law of Detachment. 2.- Two Column Proofs Involving Segment and Angle Relationships: Two Column Proofs and Flow Proofs with Segment Addition Postulate and Angle Pairs. 3.- Converting Two Column Proofs to Paragraph Proofs: An introduction to Paragraph Proofs using two column proofs. 4.- Slope Introduction: Slope of a Linear Equation. Horizontal, Vertical, Falling to the Right or to the Left. Parallel vs Skew Lines. Parallel and Perpendicular Planes. CHAPTER 3: TRIANGLES PROVING TRIANGLES CONGRUENT AND TRIANGLE INEQUALITY. 1.- Proving Triangles Congruent: Algebraic - Geometric Proofs to Prove Triangles Congruent. 2.- Proving Triangles Congruent: SSS, ASA, SAS, AND AAS. 3.- Two Column Proofs Involving Triangle Congruence: Two Column Proofs and Flow Proofs using Angle Relationships and SSS, ASA, SAS, and AAS. 4.- One and Two Triangle Inequality Theorems: Ordering sides and Angles Using Triangle Inequality. 5.- Drilling in Geometric Statemens: Congruent Geometric Statements and How to Write them and Read them Properly. CHAPTER 4 QUADRILATERALS AND THEIR PROPERTIES IN GEOMETRIC AND ALGEBRAIC PROOFS. 1.- Properties of Quadrilaterals: Squares, Rhombi, Rectangles, Parallelograms and Trapezoids. 2.- Segments and Angles in Parallelorgams: Problems Involving Angles and Segments in Regular Parallelograms and Rectangles. 3.- Segments and Angles in Squares and Rhombi: Problems that Include Angles and Segments in Squares and Rhombi. 4.- Segments and Angles in Regular and Isosceles Trapezoids: Problems Deal with Segments and Angles in Trapezoids. 5.- Two Column Proofs with Quadrilaterals and Triangles: Solving Two Column Proofs and Flow Proofs Using Properties of Parallelograms and Quadrilaterals and Properties of Triangles to Prove Congruence Statements and Segment or Angle Relationships. INSIDE EACH LESSON YOU MAY DO AS THIS GRAPHIC SHOWS CHAPTER 5 PROPORTIONAL REASONING SIMILARITY AND TRIGONOMETRY. 1.- Similarity Theorems AA, SAS and AAA. Similarity Applied to Two Triangles and Lines Cut by Transversals. 2.- Similarity Theorems Involving Special Segments In Triangles: Atltitudes, Medians, Angle Bisectors and Perpendicular Bisectors Similarity Relationships in Triangles. 3.- Similarity Applied in a Right Triangle: Drawing a height to the Right Angle of A Right Triangle. 4.- Proofs in Two Column Format involving similarity in triangles. Two Column Proofs and Flow Proofs for Similarity. 5.- 30°-60°-90° and 45°-45°-90° Triangles: Dealing with Angles and Sides in Special Right Triangles. 6.- Right Triangle Trigonometry: Right Triangle Ratios of Sine, Cosine and Tangent Applied to Solutions of Problems Involving Segments and Angles. 7.- Laws of Sines and Cosines: Trigonometry Applied to Acute and Obtuse Triangles Using the Laws of Sine and Cosine. CHAPTER 6 ANGLES, ARCS AND SEGMENTS IN CIRCLES. 1.- Basic Definitios For Circles: Arcs, Chords, Central Angles, Inscribed Angles and Arc Addition Postulate. 2.- Theorems Involving Congruent Chords and Intersecting Chords in Circles. Applied to Individual Circles or Several Circles. 3.- Inscribed and Central Angles: Problems that Focus in Inscribed and Central Angles Usings Triangles and Parallelograms. 4.- Arcs and Angles Formed by Secants, and Tangents in a Circle: Segments that Give Place Secant and Tangents in Circles and the Angles and Arcs that They Form in the Circle Intersecting Inside, On or Outside the Circle. 5.- Segment Relationships Created by Chords, Secants and Tangents. Chords, Secants and Tangents and the Segments that They Create When Intersecting Inside, On or Outside the Circle. 6.- Geometric Two Column Proofs Involving Circles with Chords, Tangents and Secants Part 1. 7.- Geometric Two Column Proofs Involving Circles with Chords, Tangents and Secants Part 2. CHAPTER 7 AREAS IN POLYGONS (REGULAR AND IRREGULAR) 1.- Angle Measure in Polygons: Interior and Angles in Polygons. 2.- Calculating Areas in Parallelograms and Rectangles. 3.- Calculating Areas in Rhombi, Trapezoids and Triangles. 4.- Areas of Triangles: Special Cases. Involving Pythagorean Theorem, Special Right Triangles and Trigonometry. 5.- Calculating Areas of Regular Polygons: Areas of Equilateral Triangles, Squares, Pentagons, Hexagons, etc. CHAPTER 8 SURFACE AREA AND VOLUME (PLATONIC SOLIDS) 1.- Finding Surface Area and Volume of CYLINDERS. 2.- Finding Surface Area and Volume of PRISMS. 3.- Finding Surface Area and Volume of Solids Built with Base 10 Blocks. 4.- Finding Surface Area and Volume of CONES. 5.- Finding Surface Area and Volume of PYRAMIDS. 6.- Finding Surface Area and Volume of SPHERES. CHAPTER 9 SURFACE AREA AND VOLUME COMPOSITE SOLIDS PLATONIC SOLIDS TOGHETER AND/OR REMOVED ONE FROM THE OTHER 1.- Calculating Surface Area and Volume of Composite Solids by Adding Solids. 2.- Calculating Surface Area and Volume of Composite Solids by Subracting Solids. 3.- Calculating Surface Area and Volume of Composite Solids by Adding and Subracting Solids. CHAPTER 10 PLANE GEOMETRY AND CALCULUS IN SURFACE AREA AND VOLUME OF SOLIDS OF REVOLUTION AND MATHEMATICAL MODELS INVOLVING SOLIDS. 1.- Surface Area of Solids of Revolution Using Plane Geometry and Calculus. 2.- Volume of Solids of Revolution Using Plane Geometry and Calculus. 3.- Animation of Area Revolving and Forming a Solid Of Revolution. 4.- Mathematical Modeling with Two Halfs of a Bottle Calculating Surface Area and Volume From the Math Model. CHAPTER 11 BASIC CONSTRUCTIONS AND TRANSFORMATIONS WITH PLANE GEOMETRY AND THE COORDINATE PLANE. 1.-Introduction to Basic Constructions Using Compass and Ruler or Straight Edge/Protractor. 2.-Basic Construction Videos 3.- Constructing a Triangle Circumscribing a Circle (Incenter) 4.- Constructing a Circle Circumscribing a Triangle (Circumcenter) 5.- Translations with Plane Geometry. 6.- Rotations with Plane Geometry. 7.- Reflections with Plane Geometry. 8.- Translations in the Coordinate Plane. 9.- Rotations in the Coordinate Plane. 10.- Reflections in the Coordinate Plane. 11.- Hands-On Transformations Using Geoboards and the Coordinate Plane. 12.- Using Technology and Miniboards with 1/8 square Grid to Perform Animation of a Doll. 13.- Transformations application. Planes flying over yosemite national park

LONG DURATION DEMO OF HOW TO INTERACT (Several Minutes but worthwhile)

HOME

 Algebra 1 and 2 Geometry Basic Math Statistics and Probability Quizzes for Geometry