Coordinate Geometry Formulas - dummies

By Allen Ma, Amber Kuang

Part of 1,001 Geometry Practice Problems For Dummies Cheat Sheet

Coordinate geometry is the study of geometric figures graphed on a coordinate plane. The slope formula can be used to determine whether lines are parallel or perpendicular. The midpoint can be used to determine if segments are bisected and also can be used to find the center of a circle. The distance formula can be used to determine the lengths of sides of geometric figures.

  • Distance formula:


  • Midpoint formula:


  • Slope formula:


  • Slope-intercept form of a line:


  • Point-slope form of a line: