Declension table of ?trikoṇaka

Neuter	Singular	Dual	Plural
Nominative	trikoṇakam	trikoṇake	trikoṇakāni
Vocative	trikoṇaka	trikoṇake	trikoṇakāni
Accusative	trikoṇakam	trikoṇake	trikoṇakāni
Instrumental	trikoṇakena	trikoṇakābhyām	trikoṇakaiḥ
Dative	trikoṇakāya	trikoṇakābhyām	trikoṇakebhyaḥ
Ablative	trikoṇakāt	trikoṇakābhyām	trikoṇakebhyaḥ
Genitive	trikoṇakasya	trikoṇakayoḥ	trikoṇakānām
Locative	trikoṇake	trikoṇakayoḥ	trikoṇakeṣu

Compound trikoṇaka -

Adverb -trikoṇakam -trikoṇakāt