High School Geometry Formulas

Front

Area of a Circle

Back

A = π r²

Front

Circumference of a Circle

Back

C = 2π r

Front

Pythagorean Theorem

Back

a² + b² = c²

Front

Area of a Triangle

Back

A = 1/2 bh

Front

Volume of a Cylinder

Back

V = π r² h

Front

Area of a Rectangle

Back

A = lw

Front

Area of a Trapezoid

Back

A = 1/2 (b₁ + b₂) h

Front

Distance Formula

Back

d = √((x₂ - x₁)² + (y₂ - y₁)²)

Front

Midpoint Formula

Back

M = ((x₁ + x₂)/2, (y₁ + y₂)/2)

Front

Slope Formula

Back

m = (y₂ - y₁)/(x₂ - x₁)