# 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

General solution of trig equations *Thursday August 05, 2021*

Prove a trigonometric equality *Wednesday August 04, 2021*

Geometry Problem, Detailed solution required. *Wednesday August 04, 2021*

60 sided Geodesic Dome *Tuesday August 03, 2021*

How to form reference triangle sides without using ruler? *Monday August 02, 2021*

Right triangle problem *Thursday July 29, 2021*

This circles question set that is the bane of my existence right now *Thursday July 29, 2021*

Solving a multiple of cosine of an angle in exact terms *Thursday July 29, 2021*

Confused with maths question involving the "t formula" *Thursday July 29, 2021*

steps to proving 2sin^2(x)+cos^2(x) = 2-cos^2(x) trig identity *Wednesday July 28, 2021*