Answer: planegeometry

AnswerCrossword Clue
PLANEGEOMETRYMath subject
PLANEGEOMETRYFirst subject in Euclid's "Elements"
PLANEGEOMETRYSubject with no depth?
PLANEGEOMETRYMathematics branch
PLANEGEOMETRYSchool subject.
PLANEGEOMETRYSubject of a Euclidean treatise
PLANEGEOMETRYSubject in Euclid's "Elements"
PLANEGEOMETRYEuclid's "elements"?
PLANEGEOMETRYHandyman's favorite math course?
PLANEGEOMETRYHigh school math course
PLANEGEOMETRYTwo-dimension math