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# bisection

«bisection» in Mova's school dictionary: **The act of dividing something into two equal parts** — its meaning for a pupil, its sense in the lessons and examples.

### part of speech

noun (bisection, bisections)

### meaning for a pupil

1) (maths) The act of dividing something into two equal parts. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bisection/#m1)

2) (maths, computing) A method of finding an answer by halving a range again and again, as in the bisection method or a binary search. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bisection/#m2)

### sense in the lessons

In geometry lessons: the bisection of an angle or a line with a compass. In maths and coding, the bisection method guesses the middle of a range and keeps the half where the answer must be, like the game «guess my number between 1 and 100».

### examples

- The bisection of the angle gave two angles of 35 degrees. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bisection/#x1)
- We learnt the bisection of a line with a compass. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bisection/#x2)
- Bisection finds the number in just a few guesses. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bisection/#x3)
- Guess 50, then 25, then 37: that is bisection. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bisection/#x4)
- The bisection of the circle makes two semicircles. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bisection/#x5)

### note

Maths: each bisection halves the range: 100 → 50 → 25 → 13 ... so about 7 halvings find any number from 1 to 100. Verb: bisect.

### Trees and pragmatics

[Every meaning and example of «bisection» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/bisection/), each sentence with its dependency tree and frames.