Geometry
Geometry is the mathematics of shape and space, and it is unusually practical: it decides whether furniture fits, how much paint you need and why bridges stand up.
What you'll learn
10 chapters, then the quiz
- 01AnglesThe rules that solve most diagrams.
- 02TrianglesThree sides, endless consequences.
- 03Area and perimeterFormulas worth memorising.
- 04CirclesPi, and where it appears.
- 05Similarity and scaleWhy doubling a model is not doubling the paint.
- 06Three dimensionsVolume and surface area.
- 07TrigonometryAngles into lengths.
- 08Coordinate geometryShape meets algebra.
- 09TransformationsMoving shapes about.
- 10Geometry in the worldWhere it actually gets used.
More math & logic tests
See all →- Easy
Mental math sprint
Arithmetic you should be able to do without reaching for a calculator.
8 questions5 min - Hard
Logic puzzles
Short problems where the obvious answer is usually the wrong one.
7 questions9 min - Medium
Probability basics
Coins, dice and cards, plus the traps that come with them.
7 questions7 min