Mathematics in Ancient and Medieval India c6.s2.49

c6.s2.49

| No. | Name of bricks | Shape | Dimension | Reference |
| 1 | *Caturthī* or *Caturabhāgīyā* or *Aṇukā* | Square | 30 *aṅg.*, 30 *aṅg.* | \*BS. 3.11; 3.39 \*AS. 11.3; 11.5; 11.7; 16.5; 14.7; 20.3. |
| 2 | *Ardhya* (half of *Caturthī*) | (1) Triangle | 30 *aṅg.*, 30 *aṅg*, √1800 *aṅg.* | BS. 3.63-64. |
| | | (2) Rectangle | 30 *aṅg.*, 15 *aṅg.* | . . . . . |
| | | (3) Pentagon (*Haṃsamukhī*) | 7½ *aṅg.*, 15 *aṅg*, 7½ *aṅg.*, √450 *aṅg.*, √450 *aṅg.* | BS. 3.68. |
| 3 | *Pādyā* (one-fourth of *Caturthī*) | (1) Triangle | 30 *aṅg.*, (√1800)/2 *aṅg.*, (√1800)/2 *aṅg.* | . . . . . |
| | | (2) Four-sided | 22½ *aṅg.*, 15 *aṅg.*, 7½ *aṅg.*, √225 *aṅg.* | BS. 3.67. |
| | | (3) Square | 15 *aṅg.*, 15 *aṅg.* | BS. 3.287. |
| 4 | *Adhyardhyā* (one and half of *Caturthī*) | Rectangle | 45 *aṅg.*, 30 *aṅg.* | . . . . . |
| 5 | *Aṣṭamī* (one-eight of *Caturthī*) | (1) Triangle | 15 *aṅg.*, 15 *aṅg.*, √450 *aṅg.* | |
| | | (2) Rectangle | 15 *aṅg.*, 7½ *aṅg.* | |