Triangle Inequality | Pythagoras Theorem | Geometry | 11+ Exam | PiAcademy

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This video is divided into 3 parts:
Part 1 - Learn
0.20 Triangle Inequality Theorem and solved examples
8:55 Pythagoras Theorem and solved examples.

Part 2
12:40 Practise

Part 3
15:18 Test Yourself

The Triangle Inequality Theorem describes the relationship between the three sides of a triangle. According to this theorem, for any triangle, the sum of the lengths of two sides is always greater than the third side. It is applicable to all types of triangles such as equilateral, isosceles and scalene.

Pythagoras theorem is useful to find the sides of a right-angled triangle. If we know the two sides of a right triangle, then we can find the third side.

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