How it works
Touch each side once. Big or small, turned or not, the count stays the same.
A triangle has 3 sides and 3 corners. A square has 4 sides and 4 corners.
A corner is where two sides meet.
Worked examples
Sides
- Touch each side of a triangle once.
- 1, 2, 3.
- A triangle has 3 sides.
Corners
- Touch each corner of a square.
- 1, 2, 3, 4.
- A square has 4 corners.
Turned and big
- A big turned square.
- Count its sides again.
- Still 4.
A taste of the worksheet
These are the first problems of set A. The printable sheet has many more, with an answer key.
- It has ___ sides.
- It has ___ corners.
- Which shape has 3 corners?
- Which shape has no corners?
- Does a rectangle have 4 sides?
Words to know
- side
- A straight edge.
- corner
- Where two sides meet.
Watch out for
- Count each side only once.
- A corner is where two sides meet.