Natyashastra
विकृष्टे तान्यशेषाणि चतुरश्रेऽपि कारयेत् । चतुरश्रं समं कृत्वा सूत्रेण प्रविभज्य च ॥ ८८॥
In the case of the misaligned parts, they should be corrected and adjusted. If they are of four sides, they should be aligned properly. Divide them with a thread after making the necessary adjustments to ensure symmetry.
english translation
vikRSTe tAnyazeSANi caturazre'pi kArayet । caturazraM samaM kRtvA sUtreNa pravibhajya ca ॥ 88॥
hk transliteration by Sanscript