Natyashastra
एवमेतेन विधिना चतुरश्रं गृहं भवेत् । अतः परं प्रवक्ष्यामि त्र्यश्रगेहस्य लक्षणम् ॥ १०१॥
By following this method, the house should be square in shape. Next, I will describe the characteristics of a triangular-shaped house.
english translation
evametena vidhinA caturazraM gRhaM bhavet । ataH paraM pravakSyAmi tryazragehasya lakSaNam ॥ 101॥
hk transliteration by Sanscript