☆ ADVANCED LEVEL : 0 ☆☆ INTERMEDIATE LEVEL : 0 ☆☆☆ ELEMENTARY LEVEL : 0 NONE : 3 ALL : 3

• 정육각형 (正六角形) : 변의 길이와 내각의 크기가 모두 같은 육각형. Noun
🌏 REGULAR HEXAGON: A hexagon with all of its sides equal in length and all of its angles equal in size.

• 자연 과학 (自然科學) : 자연에서 일어나는 현상을 연구하는 학문. None
🌏 NATURAL SCIENCE: A field of study that studies the phenomena of nature.

• 정오각형 (正五角形) : 변의 길이와 내각의 크기가 모두 같은 오각형. Noun
🌏 REGULAR PENTAGON: A pentagon with all of its sides equal in length and all of its angles equal in size.

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