2D shapes
3 Carl makes a square using ice-cream sticks and pins.
He then pushes in the opposite corners of the square to change its shape.
The squeezed square shape still has sides that are of equal length. However, we can see that the internal angles are no longer right angles. The opposite angles are equal. A quadrilateral that has the following properties is called a rhombus.
All sides are of equal length. Opposite sides are parallel. Opposite angles are equal.
AB // DC and DA // CB ∠ A = ∠ C and ∠ D = ∠ B
A
D
B
C
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28/04/2022 12:11
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