MATH 150 – High School Geometry


Course Title: Geometry

Course Description: Geometry is a branch of mathematics that explores the properties, relationships, and measurements of shapes, figures, and spatial concepts. This course introduces students to the fundamental principles of geometry, including the study of points, lines, angles, polygons, circles, and three-dimensional objects.

Course Objectives: By the end of this course, students should be able to:

  1. Identify and apply geometric terms, postulates, and theorems.
  2. Solve problems involving angles, lines, and polygons.
  3. Calculate the area and perimeter of two-dimensional shapes.
  4. Analyze and construct three-dimensional figures.
  5. Use logical reasoning and proofs in geometry.
  6. Explore real-world applications of geometric concepts.
  7. Develop critical thinking and problem-solving skills.


  • [Insert Geometry Textbook Title and Author(s)]


  • Notebook or binder for class notes and assignments.
  • Compass, protractor, and ruler.
  • Pencils, erasers, and a calculator (if allowed).


  • Homework/Classwork: XX%
  • Quizzes: XX%
  • Tests: XX%
  • Projects: XX%
  • Final Exam: XX%

Course Outline:

Unit 1: Introduction to Geometry

  • Geometric terms and notation.
  • Points, lines, and angles.
  • Introduction to proofs.

Unit 2: Triangles and Their Properties

  • Types of triangles and their properties.
  • Congruence and similarity.
  • Triangle congruence theorems.

Unit 3: Quadrilaterals and Polygons

  • Properties of quadrilaterals.
  • Special polygons (e.g., parallelograms, rhombi, trapezoids).
  • Interior and exterior angles of polygons.

Unit 4: Circles and Circular Geometry

  • Properties of circles and arcs.
  • Inscribed and circumscribed angles.
  • Theorems related to circles.

Unit 5: Perimeter and Area

  • Perimeter and area of two-dimensional shapes.
  • Composite figures and irregular shapes.
  • Surface area and volume of three-dimensional figures.

Unit 6: Transformations and Symmetry

  • Reflections, rotations, and translations.
  • Symmetry in geometry.
  • Tessellations and patterns.

Unit 7: Similarity and Trigonometry

  • Similarity and proportionality.
  • Introduction to trigonometry.
  • Trigonometric ratios and applications.

Unit 8: Real-World Applications and Review

  • Geometry in real-life situations.
  • Review of key concepts.
  • Final exam preparation.

Note: This is a general example of a high school Geometry syllabus. It’s important to adapt it to meet the specific needs and standards of your school or district. The percentages for grading, the textbook, and materials may vary. Additionally, consult with your school’s curriculum guidelines and any state or district standards that may apply.

Free Textbooks

If you’re looking for a free textbook to study geometry, there are several options available online. Here are a few reputable sources where you can find free geometry textbooks and resources:

  1. OpenStax College Geometry:
  2. CK-12 Geometry:
  3. Georgia Virtual Learning Geometry:
  4. Purplemath:
    • While not a full textbook, Purplemath offers free lessons and tutorials on various geometry topics. It’s a valuable resource for learning and understanding geometry concepts.
    • Website:
  5. MIT OpenCourseWare:
  6. Paul’s Online Math Notes – Geometry:

Before selecting a textbook or resource, consider the specific topics you need to cover and the level of detail required for your studies. Different textbooks may have varying approaches and content coverage, so choose the one that best suits your needs and learning style.


As of my last knowledge update in January 2022, several Massive Open Online Course (MOOC) platforms offer free courses in geometry. However, please note that course availability and offerings may change over time. Here are some MOOC platforms where you can often find free geometry courses:

  1. Khan Academy:
    • Khan Academy offers a comprehensive set of free math courses, including geometry. Their courses include video lessons, practice exercises, and assessments.
    • Website:
  2. Coursera:
    • Coursera offers free courses in geometry, provided by universities and institutions. While some courses offer free access to course materials, there may be fees if you want to earn a certificate.
    • Website:
  3. edX:
    • edX offers free geometry courses from universities and institutions. Similar to Coursera, you may have the option to audit courses for free or pay for a verified certificate.
    • Website:
  4. MIT OpenCourseWare (OCW):
    • MIT OCW provides free access to course materials from Massachusetts Institute of Technology (MIT) courses, including geometry-related content.
    • Website:
  5. Harvard Online Courses (HarvardX):
  6. FutureLearn:
  7. Stanford Online:
    • Stanford University occasionally offers free online courses in mathematics and geometry through platforms like Coursera and edX.
    • Website:

Please check the specific courses and their availability on these platforms, as well as any related fees for certificates or additional resources. Also, keep in mind that the content and structure of these courses may vary, so choose the one that aligns best with your learning objectives and needs.

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.