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Assoli18 [71]
2 years ago
6

Can somebody help me with this question

Mathematics
1 answer:
professor190 [17]2 years ago
3 0

Answer:

\text{a) }1,080^{\circ}, \\\text{b) }360^{\circ}, \\\text{c) }135^{\circ}, \\\text{d) }45^{\circ}

Step-by-step explanation:

a) The sum of the interior angles of a polygon with n sides is equal to (n-2)180. Since an octagon has 8 sides, substitute in n=8:

(6-2)180=\boxed{1,080^{\circ}}

b) The sum of the exterior angles for any polygon is equal to 360^{\circ}.

c) By definition, all regular shapes have equal angles and sides. Since we've found the total sum of the interior angles of an octagon in part a, each interior angle of a regular octagon must be \frac{1080}{8}=\boxed{135^{\circ}}

d) Similar to part c, all regular shapes must have equal angles and sides. From part b, we know the sum of the exterior angles of a octagon is 360^{\circ}, thus we have \frac{360}{8}=\boxed{45^{\circ}}

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