# Geometry & Trigonometry | Maths with Lemon

Source: https://mathswithlemon.io/aa-geometry-trigonometry.html


## Geometry & Trigonometry

"Τι δύσκολον; Το εαυτόν γνώναι" ("What is difficult? To know yourself")

Thales of Miletus


### SL-HL Topics

3D Geometry

Triangles – Sine/Cosine Rules

Arc, sector, segment, radians

Trigonometric equations

Unit Circle

Volume-Surface area


### HL Topics

Vectors – The basic principles

Vector equations of a line

Vectors and kinematics

Graph Theory