Question 1
OX
트라이앵글은 타악기 중 하나이다.
Hint

https://www.google.com/search?q=%EB%B0%94%EC%9D%B4%EC%98%AC%EB%A6%B0%EC%9D%80+%ED%99%9C%EC%9D%84+%EC%82%AC%EC%9A%A9%ED%95%98%EC%97%AC+%EC%97%B0%EC%A3%BC%ED%95%9C%EB%8B%A4.&sca_esv=9cd90a64e37ec4fc&rlz=1CATAVM_enKR1103&biw=1366&bih=680&ei=PkmDZqeZB-Olvr0P1Ym02Ak&ved=0ahUKEwinsOCijIeHAxXjkq8BHdUEDZsQ4