Flat shapes are also called 2D shapes. A circle is round with no corners. A triangle has 3 straight sides. A square has 4 equal sides, and a rectangle has 4 sides with two long and two short.
A shape is still the same shape if you turn it or make it bigger. A triangle upside down is still a triangle.
Worked example
A shape has 4 straight sides. Two sides are long and two are short. What is it?
- 4 sides means a square or a rectangle.
- The sides are not all equal, so it is not a square.
Answer:a rectangle
Key words
- 2D shape
- a flat shape
- side
- a straight edge of a shape
- corner
- where two sides meet
Practise this
New questions every time.
Common Core-referenced: 1.G.A.1