A shape is easy to recognise and hard to remember. Geometrixa keeps the whole catalogue in one place — what each figure is called, what family it belongs to, and the formulas that actually go with it.
BROWSE THE CATALOGUE
Flat figures and solids, grouped the way geometry groups them: circles together with the semicircle, the annulus and the circular sector; triangles with their own family; and so on through the quadrilaterals and the polyhedra. Filter 🎚️ to 2D or 3D when you only need one kind, star the figures you keep coming back to, and the recent list 📋 remembers where you were.
FORMULAS THAT BELONG TO THE FIGURE
Open a shape and its formulas are right there — area, perimeter or surface, volume where it applies — with each symbol named, so you are never left guessing whether r is the radius or the apothem.
COMPARE TWO FIGURES ⚖️
Put two shapes next to each other and see 👀 how they differ: which formulas they share 🤝, where the constants change, and what happens to area or volume when a dimension does. The comparison is the part that makes the difference stick.
THE STUDIO
Draw the figure yourself. Pen, line, rectangle, circle, triangle and hexagon, on a grid you can switch off, with colours, stroke width and fill. Sketch in 2D, look at the 3D solids, and check ✅ your work against the formula sheet on the third tab.
PRACTICE 🏋️
Short exercises that ask which figure this is and which formula fits it, so the catalogue turns into something you know 💡 rather than something you look up.
Everything is on the device 📱 — no account, no sign-in, nothing to load before you can start 🚀.
Every shape with its formulas, side by side, plus a pad to draw them on.