Precalculus Geometry SYMKC review

Area of a Square

s²

Area of a rectangle

lw or bh

Area of a Trapezoid

1/2(b₁+b₂)h

Area of a circle

πr²

Area of Right Triangle

1/2bh

Area of a Equilateral triangle

(√3/4)(s²)

Acute angle

less than 90 degrees

Right angle

exactly 90 degrees

obtuse angle

more than 90 degrees

Volume of a cube

lwh

Volume of a Prism

Bh (B= area of base)

Volume of a cylinder

πr²h

Volume of a Pyramid

1/3Bh

Volume of a cone

1/3πr²h

Volume of a sphere

4/3πr³

Interior Angle sum of a Triangle

180 degrees

Interior Angle Sum of a Quadrilateral

360 degrees

Interior Angle of a Polygon

180(n-2)

Arc Length

angle/360×2πr

Sector Area

angle/360*πr²

Line Segment

Line

parallel lines

Sine

opposite/hypotenuse (SOH)

Cosine

adjacent/hypotenuse (CAH)

Tangent

opposite/adjacent (TOA)

Special Right Triangles (30, 60, 90)

Special Right Triangles (45, 45, 90)

Parallel Lines (types of angles)