Formulas

• Quadratic formula


  (-b +- /b^2 - 4ac)/2a
• Percentage


  P= (Base)(Rate)
• General Equation


  Ax + Bx = C
• Point-Slope Formula


  y - y1 = m (x-x1)
• Slope-Intercept Formula


  y = mx + b
• Intercept Form


  x/a + y/b = 1
• Distance Formula 


  D= /(x2-x1)^2 + (y2-y1)^2
• Midpoint Formula 


  M= (x1 + x2)/2 , (y1+y2)/2
• Discriminant 


  /b^2 + 4ac
• Sum of Roots 


  -b/a
• Product of Roots


  c/a
• Vertex


  h=-b/2a and k=-b^2+ 4ac/4a
• Radian to Degrees


  (Radian)(180/pi)
• Degrees to Radian


  (Degrees)(pi/180)
• Sum of Interior Angles

  180(n-2)
• Measure of Interior Angles

  180(n-2)/n
• Sum of Exterior Angles in Convex Polygon

  360
• Measure of Exterior Angles

  360/n
• Number of Diagonals


  n(n-3)/n
• Pythagorean Theorem


  A^2 + B^2 = C^2
• Sum Theorem


  Exterior Angle= Sum of Remote Interior Angles
• Midsegment


  1/2 (Measure of Base)
• Two Tangent Power Theorem


  (a)(b)=(c)(d)
• Two Secant Power Theorem


  (a)(a+b)=(c)(c+d)