Free Geometry Help
Need some geometry help? We have more than thirty excellent geometry lessons here, broken up in general topics. Make sure to browse all of the topics to find what you need, or search by keyword.
Graphing Lines
- Asymptotes
- Domain and Range
- Finding Asymptotes
- Finding Horizontal Asymptotes
- Point Slope Form
- Slope Intercept Form
- Slope of a Line
- X-Y Axis
- Graphing a Parabola
Shapes
- Triangles
- 30-60-90 Right Triangle
- Parallelograms
- Trapezoids
- Special Parallelograms
- Congruent Triangles
- Isosceles Triangles
- Polygons
Angles, Lines, and Points
- Distance Formula
- World of Angles
- Special Angles
- Parallel Lines
- Length of a Line Segment
- Sum of the Angles of a Triangle
- Exterior Angles of a Triangle
- Interior Angles of a Polygon
- Triangle Inequalities
- Midpoint Formula
More Lessons
Formulas
Other Stuff
Lessons from Other Sites:
- Areas, Volumes, Surface Areas
- Circumference of a Circle
- Classifying Angles
- Conic Sections/Circles
- Interior Angles of Regular Polygons
- Polygon Basics
- Pythagorean Theorem
- Three-Dimensional Figures
Recent Geometry Questions
Tangram problem Saturday January 18, 2020
I will be thankful for any ideas and clues Saturday January 18, 2020
Calculate distance from ratio between three points. Saturday January 18, 2020
Please, help find the ratio between volumes Saturday January 18, 2020
Please, help to find the area of the gray triangle Friday January 17, 2020
Mosaic tesselation calculation Friday January 17, 2020
Help I'm a noob Thursday January 16, 2020
pi/(pi - (1/2)) approx = 2^(1/4) Thursday January 16, 2020
Recursive Problem Tuesday January 14, 2020
Perspective problem Tuesday January 14, 2020