A: Shang

A puzzle with other mathematical terms attached:

Puzzle: one yuan (mathematical term)

Answer: percentage

Puzzle: Test scores (guess two math nouns)

Answer: fraction, geometry

Puzzle: The road is not curved (mathematical term)

A: Naoko

Puzzle: The kite has escaped (mathematical term)

Answer: Line segment

Puzzle: the highest peak (mathematical term)

Answer: Vertex

Puzzle: sitting (mathematical term)

Answer: carry

Puzzle: Go hand in hand (mathematical term)

Answer: parallel

Puzzle: Abolish the Law (Mathematical Noun)