3 years ago

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

Mathematics

1 answer:

777dan777 [17]3 years ago

7 0

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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