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# High School Math Program

## Who's it for?

❶Rectangles, Rhombuses, and Squares

## Are you a student or a teacher?

Find the best Web sites for teaching geometry with worksheets, test review and Rather than reading a textbook or learning geometry all over again, use the Web to help your child Most Popular Olympic Student-Athletes: Sign up for our education newsletter.

Expand All Guide Sections. Be aware whenever you use the Internet. If you have any questions about Internet safety, ask your parents or a teacher, or visit the findingDulcinea Internet Security Web Guide. Lesson 11 - Congruency of Isosceles Triangles: Lesson 12 - Mathematical Proof: Lesson 13 - Perpendicular Slope: Lesson 15 - Square Prism: Lesson 16 - Triangle Inequality: Lesson 17 - Two-Column Proof in Geometry: Lesson 18 - What is a Vector in Math?

Lesson 19 - What is an Acute Angle? Lesson 1 - Angles Formed by a Transversal. Lesson 2 - Parallel Lines: How to Prove Lines Are Parallel. Lesson 5 - The Parallel Postulate: Lesson 6 - What Are Polygons? Lesson 7 - Regular Polygons: Lesson 9 - Finding the Perimeter of Polygons.

Lesson 10 - Measuring the Area of Regular Polygons: Lesson 11 - Measuring the Angles of Triangles: Lesson 1 - Ratios and Proportions: Lesson 2 - Geometric Mean: Lesson 3 - Angle Bisector Theorem: Lesson 4 - Solving Problems Involving Proportions: Lesson 5 - Similar Polygons: Lesson 7 - Triangle Proportionality Theorem. Lesson 8 - Constructing Similar Polygons. Lesson 9 - Properties of Right Triangles: Lesson 10 - The Pythagorean Theorem: Lesson 11 - The Pythagorean Theorem: Converse and Special Cases.

Lesson 1 - Parallelograms: Definition, Properties, and Proof Theorems. Lesson 2 - Measuring the Area of a Parallelogram: Lesson 3 - What Is a Rhombus? Lesson 4 - Measuring the Area of a Rhombus: Lesson 5 - Kites in Geometry: Lesson 6 - Rectangles: Lesson 7 - Measuring the Area of a Rectangle: Lesson 8 - Squares: Lesson 9 - Trapezoids: Lesson 10 - Measuring the Area of a Trapezoid.

Lesson 1 - Circles: Lesson 2 - Circular Arcs and Circles: Lesson 3 - Central and Inscribed Angles: Lesson 4 - Measure of an Arc: Lesson 6 - Tangent of a Circle: Lesson 9 - Inscribed and Circumscribed Figures: Lesson 10 - Arc Length of a Sector: Lesson 11 - Segment Lengths in Circles. Lesson 1 - Derive the Equation of a Hyperbola from the Foci. Lesson 2 - Derive the Equation of an Ellipse from the Foci. Lesson 4 - Foci and the Definitions of Ellipses and Hyperbolas.

Lesson 5 - Practice with the Conic Sections. Lesson 6 - The Focus and Directrix of a Parabola. Lesson 1 - Planes and the Polyhedron: Lesson 2 - What Are Platonic Solids? Lesson 3 - Prisms: Lesson 4 - Pyramids: Lesson 5 - What Are Cylinders? Lesson 6 - Cones: Lesson 7 - Spheres: Lesson 2 - The Cartesian Coordinate System: Lesson 5 - Calculating the Slope of a Line: Lesson 6 - Geometric Proofs for Polygons. Lesson 7 - What Are Coplanar Points?

Lesson 8 - Analytic Geometry: Lesson 3 - Finding Distance with the Pythagorean Theorem. Lesson 4 - Trigonometry: Isosceles Triangle Theorems Medians, Altitudes, and Perpendicular Bisectors Properties of Parallelograms Proving a Quadrilateral is a Parallelogram More Parallel Line Theorems Problems with Segments Problems with Parallel Lines Rectangles, Rhombuses, and Squares Properties of Similar Polygons Angle-Angle Similarity Postulate Similarity Word Problems Simplifying Square Roots Multiplying Square Roots Root 10 times Root 15 Root 11 Squared Dividing Square Roots Root 7 over Root 32 Root 48 over Root Adding and Subtracting Square Roots Pythagorean Theorem Word Problems Converse of the Pythagorean Theorem Roots as Sides Advanced and Degree Triangles Sine, Cosine, and Tangent Sine, Cosine, and Tangent with a Calculator Trigonometry Word Problems Arcs and Central Angles

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