Tick (✓) the correct answer:
Each interior angle of a regular decagon is
(a) 60°
(b) 120°
(c) 144°
(d) 180°

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Solution

(c) 144°
Each interior angle of a regular decagon = $180 - \frac{360}{10} = 180 - 36 = 144^{o}$

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Tick (✓) the correct answer: Each interior angle of a regular decagon is (a) 60° (b) 120° (c) 144° (d) 180°

(c) 144° Each interior angle of a regular decagon = 180-36010=180-36=144o

Tick (✓) the correct answer:
Each interior angle of a regular decagon is
(a) 60°
(b) 120°
(c) 144°
(d) 180°

(c) 144°
Each interior angle of a regular decagon = $180 - \frac{360}{10} = 180 - 36 = 144^{o}$