ACT Math

Area of a Square

• A=rx2
• A=s²
• A=LxW

Area of a Square

• A=rx2
• A=s²
• A=LxW

Area of a Triangle

• A=bh⁄2
• A=b+h
• A=bxhx2

Area of a Circle

• A=x²
• A=πr²
• A=π²

Area of a Rectangle

• A=π²
• A=2xbxh
• A=lw or bh

Area of a Trapezoid

• A= ½bh
• A=bh
• A=½ (b₁+b₂)h

Area of a Parallelogram

• A=bh
• A=2bh
• A=b₂xh₂

Pythagorean Theorem (Right Angle) 

• a²  + b² = c^{4
  (3,4,5)
  (6, 8 10)
  (5, 12, 13)}
• a² + b² = c^{2
  (3,4,5)
  (6, 8, 10)
  (5, 12, 13)}

Area of a circle

• 𝝅r^2
• 𝝅 d
• 𝝅r2h
• 2𝝅r

• radius

• ratio

• rotation

• rad