Euclidea

4.6
89.1K reviews
1M+
Downloads
Content rating
Everyone
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About this game

Euclidea is a FUN & CHALLENGING Way to Create Euclidian Constructions!

127 Levels: from very easy to really hard
10 Innovative Tools
"Explore" Mode and Hints
Easily Drag, Zoom & Pan


New levels are unlocked as you solve the previous ones. You can complete the whole game only if you earn all the stars. But you can buy an IAP that removes this restriction.

“Euclidea has been shown to help with imagination, intuition, and logic, all wonderful skills to develop.” – appPicker

“Euclidea is an absolute joy to play…it’s a game that every math student should have and, in an ideal world, every adult should like.” – Non-Trivial Games

***About Euclidea***
Euclidea is a brilliantly original way to learn about, explore and have fun with Euclidian Constructions! Your task is to solve interesting challenges by building geometric constructions with a straightedge and compass. If you design the most elegantly simple solutions in the least number of moves, you’ll earn the highest scores. Solutions are scored in lines (L) and elementary Euclidean constructions (E).

***Start Simple and Get Smarter!***
Don’t worry if you aren’t a math wizard. Euclidea starts out with simple challenges that guide you through the basics. Once you master the fundamentals, you’ll move on to tougher, more mind-bending challenges such as inner/outer tangents, regular polygons, and more. There are 120 unique challenges in total, which are organized in packs for simpler navigation.

***Add Constructions to Your Interface***
When you learn certain significant constructions – such as angle bisectors, non-collapsing compass, and so on – they are automatically added to the Euclidea interface’s shortcut, which helps you save time and allows you to create clean, uncluttered drawings.

***Easily Drag, Pan & Zoom***
Euclidea-created constructions are completely dynamic. As such, you can drag to adjust angles, lines, radii and so on. You can also easily zoom and pan. This not only makes the experience more interactive, but it allows you to more deeply grasp the relationships between geometric elements, explore various possibilities, and analyze errors.

***Instant, Automatic Precision***
Don’t worry about spending time or effort trying to achieve perfect precision, because Euclidea automatically handles that task by pinning points, lines and circles to the app’s clean interface.

***Additional Special Features***
> A helpful “Explore” mode that allows you to see the figure you need to construct
> An inventory of tools that you create as you progress – you’ll need these to solve future challenges
> Some challenges can be solved in more than one way, which means you can try a different approach and have even more fun

***Questions? Comments?
Send in your inquiries and stay up-to-date on the latest Euclidea news at https://www.euclidea.xyz/
Updated on
Oct 7, 2020

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info and App activity
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.6
82.7K reviews
A Google user
October 13, 2018
My lack of intuitiveness is why I give it 4 stars. I appreciate the challenges and enjoy when I figure them out. My problem is I just need some sort of instructions somewhere that I can refer to. For example: goals L and E are independent. Solve once for each for 3 gold stars. I guess I missed the part that explains what L & E is. Maybe it'll say in the instructions that aren't. There were a couple of other things that left me scratching my head for too long trying to figure out. But that's just the way it is. Nowadays, nothing new has instructions. You just have to figure it out. I'm too old.
3 people found this review helpful
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A Google user
October 13, 2019
Hours of fun and challenge! Getting all the stars to progress past the beta (2nd) level is exceptionally difficult since the "drafting compass and ruler" behave as simple lines and two point circles (center & radius) without fixed dimesions. This does enable wild adjustments to explore geometric relationships. Yet the point and intersection tool are useless in affixing relationships, like the 3 points of a line created by 2 circles and a center. More exampl no txt room.
7 people found this review helpful
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neverbored3
March 9, 2021
I AM LEARNING! Maybe it's my ocd brain, but this is fascinating. There are some levels that seem sort of obvious to me, because I understand intuitively how shapes fit together. But other stages blow my mind, and I have to look the solutions up. But I don't just copy the answer and move on. I sit and watch the solution unfold, and try to understand how one shape leads to the next. Then try the level some more to see if I now get the principles. I'm getting better at geometry through this!
62 people found this review helpful
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What's new

v4.43

• Fixed bugs.

If you enjoy Euclidea, please leave a nice review on the store.
Happy solving!