# Year 9 Maths

At the moment in Year 9, we are studying Pythagoras’ Theorem. Born in 570 BC, Pythagoras was a Greek philosopher who made important developments in mathematics, astronomy and the theory of music.

We have been looking at how the theorem works, as well as solving problems using the theorem. We learnt that if we label the length of the sides of a right-angled triangle a, b and c as shown, then the area of the largest square is c × c or c2 and the areas of the smaller squares are a2 and b2. We can then write Pythagoras’ Theorem as a2 + b2 = c2, allowing us to work out the length of missing sides in right angled triangles.

Firstly, we looked at how to calculate the hypotenuse, which is the longest side of a right-angled triangle and recently, we have been looking at how to justify if a triangle is right angled or not and solving problems involving using the theorem.

I have really enjoyed learning about Pythagoras’ Theorem and Miss Hasan has made it really easy to understand. I think it’s amazing that the theorem works for all right-angled triangles!

By Amy M, Year 9

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