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kupik [55]
3 years ago
12

One angle of an octagon is 65º. Theothers are equal to each other. Find them.​

Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
8 0

Answer:

42 1/7 degrees

Step-by-step explanation:

65+7x=360

7x=295

x=42 1/7

Bumek [7]3 years ago
5 0
  • Answer:

<em>x = 145°</em>

  • Step-by-step explanation:

<em> the sum of interior angles of octagon formula</em>

<em>S = (n - 2)×180°</em>

<em>n = 8</em>

<em>S = (8 - 2)×180°</em>

<em>S = 6×180°</em>

<em>S = 1080°</em>

<em>we have 1 angle = 65° & others are equal to each other</em>

<em>1080° - 65° = 7x</em>

<em>7x = 1015°</em>

<em>x = 1015° : 7</em>

<em>x = 145°</em>

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