• Why was the obtuse angle so depressed?

    Because he is never right.

    • Why can you never trust a math teacher holding graphing paper?

    They must be plotting something.

    • Why was the equal sign so humble? 

    Because he knows he wasn't > or < anyone else.

    • What do you call a group of dudes who love math?

    Alge-bros

    • There is a fine line between a numerator and a denominator.

    but only a fraction would understand.

    • What is a math teacher's favorite sum?

    Summer!

    • Why are parallel lines so tragic if they have so much in common?

    Because they never meet.

    • Dear Algebra, stop trying to find your X.

    They're not coming back and don't ask y.

    • What do you call more than one L?

    A parallel. 

    • How do you solve any equations?

    Multiply both sides by zero.

    • Surgeon:  Nurse, I have so many patients.  Who do I work on first?

    Simple, follow order of operations. 

    • Why was the student confused when he went from Language Arts class to Math class?

    Because in Language Arts he learned that a double negative is bad but in math it is positive.