trisect

[ trahy-sekt, trahy-sekt ]

/ traɪˈsɛkt, ˈtraɪ sɛkt /

to divide into three parts, especially into three equal parts.

Origin of trisect

1685–95; tri- + -sect < Latin sectus, past participle of secāre to cut, sever; see section

tri·sec·tion, noun tri·sec·tor, noun

A rule for the cubic equation by which the problem of trisection is solved has been given by Cardan.

Scientific Studies |Henry Dircks
His problems of the trisection of the angle, and the duplication of the cube, are curious and interesting.

The Every Day Book of History and Chronology |Joel Munsell
He also contributes to the history of the trisection of an angle.

The Teaching of Geometry |David Eugene Smith
In other words, the trisection of any angle, by the use of the straightedge and compasses alone, is impossible.

The Teaching of Geometry |David Eugene Smith

Geometry versus Algebra; or the trisection of an angle geometrically solved.

A Budget of Paradoxes, Volume II (of II) |Augustus de Morgan

trisect

/ (traɪˈsɛkt) /

(tr) to divide into three parts, esp three equal parts

trisection (traɪˈsɛkʃən), noun trisector, noun

C17: tri- + -sect from Latin secāre to cut