What is "trikonasthanas"

Trikonasthanas or trikonas or trines are conventionally the Lagna or the Birth-ascendant, the fifth and the ninth bhava or house counted from the Lagna (or the Chandra-lagna or the Surya-lagna). They form the Dharma-trikona and are also known as the Lakshmisthanas, these bhavas and their lords signify luck and prosperity. The Lagna is both, a kendrasthana and a trikonasthana.