Shapes
Count the sides, the corners, and the square corners. Every shape is drawn turned a different way, so the only way to answer is to look at it properly.
No account, and the maths stays in your browser — more— less
This activity is for learning and practice. Anything it suggests is indicative only — it is not a formal assessment and not a substitute for a teacher or tutor.
Nothing you answer is sent to Zerdly. Progress is saved on this device only if you switch saving on, and you can delete it at any time. How Kids Maths handles data.
Set your country and age — change
Setting an age keeps the questions at the right level for that age. It does not lock anything — you can still try any topic, at any age, in any order. Levels are a guide only, not a curriculum.
Your age is not saved anywhere. Your country is remembered only if you have switched saving on.
Saving your progress
Nothing is being saved. You can practise as much as you like — when you close the tab, the session is gone.
Why the shapes are never the same way up
A square turned halfway between its corners is still a square — but a lot of children will call it a diamond, because every square they have been shown sat flat on its bottom edge. The same happens with triangles: stand one on its point and it stops looking like a triangle to someone who learned the word from a picture rather than from counting.
So every shape here is turned to a random angle. You cannot answer by recognising the silhouette; you have to count what is actually there. That is the skill.
Sides and corners always match
A shape with five straight sides has exactly five corners, and that is true of every shape in this tool. Both questions are asked on purpose — noticing that the two answers are always the same is worth more than learning them separately.
What makes a corner square
A square corner — a right angle — is one you could fit the corner of a piece of paper into exactly. It is what separates a rectangle from any other four-sided shape: both have four sides and four corners, but only the rectangle has four square ones.
School levels
School levels are a guide only. They show where a skill is usually taught in each country and are not taken from, aligned to, or endorsed by any curriculum authority. Your school may cover it earlier or later.