Natyashastra
उत्तानो वर्तुलस्त्र्यश्रः स्थितोऽधोमुख एव च । पञ्च प्रकारा हस्तस्य नाट्यनृत्तसमाश्रयाः ॥ १८३॥
The five types of hand gestures in acting and dance are: the upward, circular, triangular, and downward positions, along with the standing position.
english translation
uttAno vartulastryazraH sthito'dhomukha eva ca । paJca prakArA hastasya nATyanRttasamAzrayAH ॥ 183॥
hk transliteration by Sanscript