End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
http://civils.farafile.ir/file/46602/طرح-درس-و-روش-تدریس-ریاضی-دوم-فصل3-یادآوری-شکل-های-هندسی