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04-03-2021
Mathematics

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identical pentagons are joined as shown above work out the size of angle Y.

identical pentagons are joined as shown above work out the size of angle Y class=

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sqdancefan sqdancefan

04-03-2021

9514 1404 393

Answer:

36°

Step-by-step explanation:

Each exterior angle is 360°/5 = 72°. This is the base angle of the isosceles triangle formed by drawing a line opposite angle y at the corners of the pentagons.

The angle y is ...

y = 180° -2(72°)

y = 36°

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