Mastering Arabic

Which letter is articulated by puffing up the cheeks and raising the back of the tongue?

Which letter has only two shapes and is considered a 'naughty' letter?

Which letter is similar to ث (Thaa) in terms of articulation point?

Which letter is articulated by the tip of the tongue out between the front teeth with a flat tongue in the mouth?

Which letter is articulated by the tip of the tongue out between the front teeth with a flat tongue and airflow?