# Numbers | Maths with Lemon

Source: https://mathswithlemon.io/aa-geometry-trigonometry-Voronoi%20diagrams.html


#### Perpendicular bisectors


##### What you have to know:

- You must know all the basics about cos x, sin x and tan x properties. (If not, check this lesson)
- You must be able to rearrange formulae. (If not, check this lesson)

##### Key Points

- 1. Watch the video:
- 2. Watch this video for perpendicular lines .

#### Voronoi diagram – Introduction


##### What you have to know:

- The Pythagorean Theorem.

##### Key Points

- 1. Watch the video:
- 2. Solved problems on Voronoi diagrams. Watch the video .

### IB Past Paper Problems

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