About Geometry Contest
Geometry Contest is a free resource for students, teachers, and anyone who enjoys the moment a diagram suddenly makes sense.
What you'll find here
Our Resources library covers the ground you'd expect and a bit more:
- Core concepts — points, lines and planes, angle relationships, triangle properties, circle theorems, congruence and similarity
- The Pythagorean theorem — what it says, why it holds, and the extensions that follow from it
- Contest strategy — recognizing problem types fast, memorizing what's worth memorizing, and pacing a timed paper
- Challenge problems — angle chasing, constructions, area maximization, coordinate methods, 3D reasoning, formal proof
- Common mistakes — the ten errors that cost the most marks, and how to stop making them
- Geometry in life — symmetry in nature, architecture, GPS, medical imaging, and design
When you're ready to put it into practice, our Geometry Activities turn passive reading into something you actually did.
Our approach
Geometry rewards seeing before calculating. Our articles show the figure first, name the theorem that unlocks it, and only then do the algebra — because recognizing the configuration is the skill that transfers, and the arithmetic is the part that doesn't.
Get in touch
Spotted an error? Have a topic you'd like us to cover? Using our material with a class? Drop us a line — we read every message.