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Nov17

Geometry and 2D Shapes with the Help of a Tangram

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In today’s post we’re going to talk about Geometry and and 2D figures.  To help us, we’re going to use an old Chinese game, Tangram.

The Tangram is a puzzle made up of 7 pieces: a parallelogram (rhomboid), a square, and 5 triangles. The objective of this game is to create shapes using the 7 pieces. The pieces must touch but not overlap.

tangram

Working with the Tangram, apart from stimulating creativity and developing spatial vision, deepens knowledge of different mathematical areas, geometry in particular. It can be used to introduce concepts of 2D geometry.

Let’s take a look at the shapes we use with the Tangram:

Triangle: A polygon with three sides and three angles.

tangram

Square: A polygon with four equal sides and four right angles.

tangram

Parallelogram: A polygon with four sides, which has two sets of equal sides and two sets of equal angles.

tangram

At Smartick we go one step further and introduce more shapes, so we can make almost everything we can imagine. Let’s take a look at what 2D geometrical figures the Smartick Rooster is made up of:

tangram

The Smartick Rooster contains 1 square:

tangram

If you count, you will find that the Smartick Rooster is made up of 6 triangles:

tangram tangram tangram tangram tangram tangram

 

There’s also 1 rhomboid:

tangram

The Smartick Rooster’s belly is made from a pentagon. A pentagon is a 2D geometric figure with five sides and five equal angles.

tangram

Its legs are made from a rectangle. A rectangle is a parallelogram that has two sets of equal sides and four right angles.

tangram

The feet are made from an oval. An oval is a squashed circle that represents an ovoid or elliptical shape.

tangram

You could make your own Tangram with all these 2D figures!!

There are many more 2D shapes you can find if you investigate… Take a look at our previous posts to see if you can find any more shapes than the ones we’ve seen today:

If you want to keep learning primary mathematics, register with Smartick and try it for free.

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