Question

cine imi rezolva repede punctele ab de la toate exercitiile ii dau coroana

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Answer 1

Răspuns:

1. a) ( 6 - 2 ) × 180° = 4 × 180° = 720°

  b) ( 10 - 2 ) × 180° = 8 × 180° = 1440°

2. a) ( 6 - 2 ) × ( 180° / 6 ) = 4 × 30 = 120°

   b) ( 10 - 2 ) × ( 180° / 10 ) = 8 × 18 = 144°

3. l - numar laturi

a) 108 × l = 180 (l - 2)    180l - 108l = 360 ⇒ l = 5

b) 120 × l = 180l - 360    60l = 360  ⇒ l = 6