The number of sides of two regular polygons are in the ratio 5 : 4. The difference between their interior angles is 9°. Consider the following statements :

1. One of them is a pentagon and the other is a rectangle.

2. One of them is a decagon and the other is an octagon.

3. The sum of their exterior angles is 720°.


Which of the above statements is/are correct ?

Mathematics 2018 CDS Elementary Mathematics 2018 CDS 2018

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