Math practice · reimagined

Geometry

Turn Geometry into a fight you actually want to win. Every problem is an attack — solve it faster than your opponent and you land the hit.

Ages 7–70 · no download · plays in your browser · 20 languages

Play Geometry free ▸

How it works

Geometry

Pick a fighter, choose Geometry, and trust your numbers. The faster and cleaner you solve, the harder you hit — from gentle early grades all the way to Olympic-level challenges.

The perimeter is the distance all the way AROUND a shape — like walking the fence around a garden.

For a rectangle, add up all four sides. A 5 by 3 rectangle has sides 5, 3, 5, 3, so the perimeter is 5 + 3 + 5 + 3 = 16. (A shortcut: add length and width, then double.)

Type the total distance around.

More math to master

— Quick answers —

Geometry: the short FAQ

Is the Geometry free to play?: Yes. The Geometry is free to start right in your browser — no download, no signup. Paid plans later unlock the full fighter roster and the deeper curriculum.
Who is the Geometry for?: Anyone from 7 to 70. The early grades stay gentle for beginners, while the higher tiers will make even the confident sweat.
Do I need to download anything to play the Geometry?: Nope. The Geometry runs in any browser, and there's a mobile app on the same account if you'd rather train on your phone.
Can the Geometry be used in the classroom?: Absolutely. Teachers run the Geometry with a whole class and track who's improving — see the schools plan for per-student pricing and a teacher dashboard.

Ready to throw down?

Play free ▸

Geometry

Pick a fighter, choose Geometry, and trust your numbers. The faster and cleaner you solve, the harder you hit — from gentle early grades all the way to Olympic-level challenges.

The perimeter is the distance all the way AROUND a shape — like walking the fence around a garden.

For a rectangle, add up all four sides. A 5 by 3 rectangle has sides 5, 3, 5, 3, so the perimeter is 5 + 3 + 5 + 3 = 16. (A shortcut: add length and width, then double.)

Type the total distance around.

Geometry: the short FAQ

Is the Geometry free to play?

Yes. The Geometry is free to start right in your browser — no download, no signup. Paid plans later unlock the full fighter roster and the deeper curriculum.

Who is the Geometry for?

Anyone from 7 to 70. The early grades stay gentle for beginners, while the higher tiers will make even the confident sweat.

Do I need to download anything to play the Geometry?

Nope. The Geometry runs in any browser, and there's a mobile app on the same account if you'd rather train on your phone.

Can the Geometry be used in the classroom?

Absolutely. Teachers run the Geometry with a whole class and track who's improving — see the schools plan for per-student pricing and a teacher dashboard.