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Rao’s scheme identifies houses 1, 5, and 9 as trikonas.
Keep the house category separate from Western degree-based trines.
P. V. R. Narasimha Rao, Vedic Astrology: An Integrated Approach, §7.4 (physical pp. 86–89) ↗
Count it for yourself
Atlas worked example: Leo is fifth from Aries. A body at 1° Leo is 92° from a body at 29° Aries. Their signs form a first-to-fifth relationship even though their actual angular separation is not an exact 120° trine.
Use the natal longitudes to check an aspect separately. A shared English label must not replace the selected Jyotish house-counting convention with a Western aspect rule.
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Select a period pair and inspect its relative sign count. The Trikona chip links here when that count belongs to the displayed house group. Read the exact longitudes alongside the signs.
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Word origin · etymology
Sanskrit tri-koṇa (त्रिकोण): triangular; a triangle.
This lexical sense does not settle which house set a particular Jyotish school adopts. First technical use is unverified.
How we know · epistemology
Traditional Jyotish house-category convention.
This refers to houses, not Western degree-based trine aspects between planets.
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