Geometry Formulas

Standard Form

Slope

Slope-Intercept Form

Point-Slope Form

Distance on a Number Line

Distance on a Coordinate Plane

Distance in Space (3D)

Distance Arc Length

Midpoint on a Number Line

Midpoint on a Coordinate Plane

Midpoint in Space (3D)

Perimeter of a Square

Perimeter of a Rectangle

Circumference of a Circle

Area of a Square

Area of a Rectangle

Area of a Parallelogram

Area of a Trapezoid

Area of Rhombus

Area of Triangle

Area of Regular Polygon

Area of a Circle

Area of Sector of a Circle

Quadratic Formula

Lateral Surface Area of Prism

Lateral Surface Area of a Cylinder

Lateral Surface Area of a Pyramid

Lateral Surface Area of a Cone

Total Surface Area of a Sphere

Total Surface Area of a Hemisphere

Volume of a Pyramid

Volume of a Rectangular Prism

Volume of a Right Circular Cylinder

Volume of a Right Circular Cone

Volume of a Sphere

Surface Area of a Regular Prism or Cylinder (2-based)

Surface Area of a Regular Pyramid or Cone (1-based)

Pythagorean Theorem

Sum of Degree Measures of the
Interior Angles of a Polygon

Degree Measure of an Interior Angle of a Regular Polygon

⊥

||

≅

∼

≈

∆ABC

∠ABC

m∠ABC

Circle O