Shapes are everywhere! Let’s name five flat shapes.
| Shape | What to look for |
|---|---|
| circle | round, no corners |
| triangle | 3 straight sides, 3 corners |
| square | 4 equal sides, 4 square corners |
| rectangle | 4 sides, 4 square corners |
| hexagon | 6 sides, 6 corners |
Key idea
A shape’s name comes from its sides and corners, not from its size, its color, or which way it is turned.
Why it works
Turning a triangle does not change its 3 sides and 3 corners. So it is still a triangle.
Worked example: Upside down
Is an upside-down triangle still a triangle?
- Count its sides: 3.
- Count its corners: 3.
- Yes. It is still a triangle.
Answer: Yes
Common mistake
Saying a tilted or upside-down triangle is “not a triangle” because it does not look like the usual picture. Turning never changes a shape’s name. Count the sides to check.
For grown-ups: Go on a shape hunt at home: plates, windows, books, signs. Turn a paper triangle around and ask if it is still a triangle.