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Mnenie [13.5K]
3 years ago
11

How many lines of symmetry does a regular octagon have?

Mathematics
1 answer:
Lesechka [4]3 years ago
7 0

Answer:

8

Step-by-step explanation:

  • An Equilateral Triangle (3 sides) has 3 Lines of Symmetry
  • A Regular Pentagon (5 sides) has 5 Lines of Symmetry
  • A Regular Hexagon (6 sides) has 6 Lines of Symmetry
  • A Regular Heptagon (7 sides) has 7 Lines of Symmetry
  • A Regular Octagon (8 sides) has 8 Lines of Symmetry
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It's helpful to choose letters to represent the measures of these complementary angles.  Let x represent one and y the other.

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Answer:

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Step-by-step explanation:

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kobusy [5.1K]

Step-by-step explanation:

a)

Two of the three interior angles are known. Both are equal to 55°. This can be seen by looking closely at the picture. To find the third angle subtract the other two from 360°

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Do the same thing only afterward subtract the third angle from 180 to find the supplementary angle

360\textdegree-40\textdegree-28\textdegree=ans\textdegree\\180\textdegree-ans\textdegree=x

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2 years ago
Which expression is equivalent lo the following complex fraction?
aev [14]

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\frac{ - 1}{2}

<h2>Hope this helps you !! </h2>

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r-ruslan [8.4K]

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Step-by-step explanation:

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= -72a^3 +108a^2

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