# 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

Surface Area (Again) *Thursday February 25, 2021*

Finding numbers for two sides *Thursday February 25, 2021*

Geometry HW problem *Thursday February 25, 2021*

Finding the lenght of the missing base in a trapezoid. *Wednesday February 24, 2021*

Circle Geometry Question - Need Help Proving 2 Angles are Equal *Tuesday February 23, 2021*

Equations for double helix in parametric form *Tuesday February 23, 2021*

Determine the angle at the center, in radians. *Tuesday February 23, 2021*

Trigonometry: Graphs and Equations *Monday February 22, 2021*

Necessities for Electronics *Monday February 22, 2021*

Convex quadrilateral ABCD which AD=AB+CD *Monday February 22, 2021*