- Geometria
- Angoli complementari
- Age 11-14
-
level: 1.1 sc. sec. di primo grado
- Italian
คำแนะนำของผู้เขียน
spiegazione e esercizi, con sintesi vocale
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คำแนะนำของผู้เขียน
spiegazione e esercizi, con sintesi vocale