λΈ”λ Œλ”μ—μ„œ kλˆ„λ₯΄λ©΄ 펜λͺ¨μ–‘λ‚˜μ™€μ„œ μ„ κ³Ό 선에 μ μ„μ°μ–΄μ„œ 면을 λ“±λΆ„ν•΄μ€„μˆ˜ μžˆλŠ”κΈ°λŠ₯μ΄μž‡μžλ‚˜


근데 펜으둜 λ‹€ 찍고 λ§ˆμ§€λ§‰μ— μ μš©μ‹œν‚€λŠ”λ²•μ„ λͺ¨λ₯΄κ²Ÿλ‹€..