Tick (✓) the correct answer:

Question:

Tick (✓) the correct answer:

Each interior angle of a regular decagon is

(a) 60°

(b) 120°

(c) 144°

(d) 180°

Solution:

(c) 144°

Each interior angle of a regular decagon $=180-\frac{360}{10}=180-36=144^{\circ}$

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