Possible Clues:

• Travel around eastern Maine to test some maths
• Mathematics of points, lines, curves and surfaces
• The mathematics of points and lines
• Subject that's very useful later in life you work as a triangle theorist or area calculator
• Mathematics of shapes
• Grey tome mishandled branch of mathematics
• High school math
• George has me starting test in maths subject
• What may be found in school textbook, awful grey tome
• Field of pure mathematics