# 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

Volume Calculation *Tuesday June 22, 2021*

Need help with this homework question *Tuesday June 22, 2021*

Help with wooden blocks *Tuesday June 22, 2021*

Area moment of inertia of a finned hollow cylinder *Monday June 21, 2021*

Angle Proofs with CPCTC *Monday June 21, 2021*

Math Question - Too hard for me *Monday June 21, 2021*

Hinge Theorem *Monday June 21, 2021*

Some trig function question (I think) that I have no idea how to do *Sunday June 20, 2021*

Please help *Sunday June 20, 2021*

Is there a way to rewrite the parametric equations of a cycloid as y as a function of x? *Saturday June 19, 2021*