Daftar Pustaka https://www.gramedia.com/literasi/rumu s-bangun-ruang-matematika/? srsltid=AfmBOooHlKwrLoV6_UIaNeI8R1i bB2NSH0Vw0wNC4iMXDhAV72rHuEXz# Pengertian_Bangun_Ruang