Triangle:
  SSS=Side-Side-Side
  SAS=Side-Angle-Side
  ASA=Angle-Side-Angle
  a,b,c=3 sides
  A,B,C=3 angles
  Ha,Hb,Hc=3 heights
  Perimeter=a+b+c
  Area=Triangle area
  R=Outer circle radius
  r=Inner circle radius
Bow:
  b=Bottom length
  h=Bow height
  Area=Bow area
  Arc=Arc length
Ellipse:
  a=Major radius
  b=Minor radius
  Perimeter=Approximate perimeter
  Area=Ellipse area
Ball:
  r=Ball radius
  Surface Area=Surface area
  Volume=Solid volume
Cylinder:
  r=Bottom radius
  h=Cylinder height
  Surface Area=Surface area
  Volume=Solid volume
Cone:
  r=Bottom radius
  h=Cone height
  Surface Area=Surface area
  Volume=Solid volume
2 unknowns:
  a1,b1,c1=Parameters
  a2,b2,c2=Parameters
  x,y=Solutions
3 unknowns:
  a1,b1,c1,d1=Parameters
  a2,b2,c2,d2=Parameters
  a3,b3,c3,d3=Parameters
  x,y,z=Solutions
Quadatic:
  a,b,c=Parameters
  x1,x2=Solutions