Maths

Bisect:

1. 分為二
2. 【數】平分;二等分

動變:

bisected; bisected; bisecting

Examples:

1. to cut or divide into two equal or nearly equal parts. 2. Geometry . to cut or divide into two equal parts: to bisect an angle. 3. to intersect or cross: the spot where the railroad tracks bisect the highway. 4. to split into two, as a road; fork: There's a charming old inn just before the road bisects. –noun 5. Also called split. Philately . a portion of a stamp, usually half, used for payment of a proportionate amount of the face value of the whole stamp.

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bisect即係分成等份
eg
bisect the angle 即將角度分成兩等份