1) Create thirds 2) Cut in thirds 3) Cut in three 4) Cut into thirds 5) Cut into three 6) Cut into three equal parts 7) Cut into three parts 8) Cut twice 9) Divide an angle 10) Divide by three 11) Divide evenly 12) Divide geometrically 13) Divide in threes 14) Divide into 120° sections 15) Divide into equal thirds 
• (v. t.) To cut or divide into three parts. • (v. t.) To cut or divide into three equal parts.
[v] - cut in three
trisect To divide or cut into three parts; especially, into three equal parts.
To cut an object into three equal parts. See also: Bisect.