trisection

/tɹaɪsˈɛkʃən/ noun

The act of division of something (such as an angle, line segment, or circle) into three parts, especially three equal parts.

Word Origin Trisection is tri- 'three' + sect from Latin secare 'to cut' + -ion. So it's literally 'cutting into three parts.' The root secare gives us section, sector, dissect, and insect (originally 'cut into' because of segmented bodies). The PIE root *sek- 'to cut' also gives us saw, scythe, and segment. So trisection is the act of cutting into three.

noun The act of division of something (such as an angle, line segment, or circle) into three parts, especially three equal parts. countable

The trisection of the angle was a key step in the geometric proof.

(名词) 三等分

将角三等分是这个几何证明中的关键步骤。

(sustantivo) El acto de dividir algo (como un ángulo, un segmento de línea o un círculo) en tres partes, especialmente en tres partes iguales.

La **trisección** del ángulo fue un paso clave en la demostración geométrica.

(nom) trisection [Action de diviser quelque chose (un angle, un segment de droite ou un cercle) en trois parties, notamment trois parties égales.]

La trisection de l'angle était une étape clé de la démonstration géométrique.

(Substantiv) Dreiteilung [der Vorgang, etwas (z. B. einen Winkel, eine Strecke oder einen Kreis) in drei Teile zu teilen, insbesondere in drei gleiche Teile]

Die **trisection** des Winkels war ein entscheidender Schritt im geometrischen Beweis.

(名詞) 何か（角度・線分・円など）を三つに分けること、特に三等分すること。

その角度の三等分は幾何学的な証明の重要なステップだった。

(substantivo) trisseção; trissecção; divisão em três partes [O ato de dividir algo (como um ângulo, segmento de reta ou círculo) em três partes, especialmente três partes iguais.]

A trissecção do ângulo foi um passo fundamental na demonstração geométrica.