Triangle
Toddler · 2–3Color the triangle, then go and find a roof, a slice of pizza, or a party hat around the house. A triangle is the first shape with a point at the top, and counting its three sides and three corners together is the moment most children realise those two numbers are always the same. Coloring a shape rather than tracing it makes a child follow the whole outline with their eyes to find the edge, which is the part that builds recognition — the naming comes easily after that. Print it on A4 or US Letter, or color it online with tap-to-fill.
Three sides, three corners
A triangle is the first shape where a child can count the sides and the corners and find the same number both times, and that is a real mathematical observation rather than a trick. Do it out loud on this page: three sides, three corners, and the name says three as well.
Drawing one is harder than the shape suggests, because two of the three strokes are diagonals and the top has to come to a point. Diagonals develop later than straight lines, so most children copy a triangle somewhere between four and five, after the square and well after the circle.
Not all triangles look the same
This is the shape where children most often learn the wrong lesson. A triangle shown only as a neat equilateral one, point up, teaches that shape rather than the rule. Turn the page upside down and ask whether it is still a triangle. Draw a long thin one. The definition is three straight sides and nothing else, and a child who has met a few odd triangles holds onto that far better.
Frequently asked questions
- Is an upside-down triangle still a triangle?
- Yes, and it is worth checking that your child agrees. Children who have only ever seen point-up triangles often say no, which reveals that they have memorised a picture rather than learned the shape.
- When can children draw a triangle?
- Usually between four and five. It needs two diagonal strokes and a point at the top, and diagonals develop after vertical and horizontal lines.