Regular shapes are shapes where the lengths of the sides are equal, as well as the inside angles.
Irregular shapes are not so simple; their sides and angles are not the same size.
Some examples of irregular shapes are irregular pentagons, right-angled triangles and irregular hexagons.
Tessellations
We can click shapes together 鈥 both regular and irregular 鈥 and form tessellations, to build other shapes.
Tessellations should have no spaces between the joining shapes, and the shapes should also not overlap one another.
Can CAL build his patio?
In this video CAL has some slabs that he wants to use to build a patio in his garden.
But, the slabs are irregular shapes, and he does not know how to get the patio to click together.
Does he have to return the slabs, or can he make them work?
More on Shape and space
Find out more by working through a topic
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