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Vsevolod [243]
3 years ago
15

Help me plss need help with theses three

Mathematics
1 answer:
fiasKO [112]3 years ago
4 0
interior angle of a regular 18-gon.
It is easier to calculate the exterior angle of a regular polygon of n-sides (n-gon) by the relation
exterior angle = 360/n
For a 18-gon, n=18, so exterior angle = 360/18=20 °
The value of each interior angle is therefore the supplement, or
Interior angle = 180-20=160 degrees.

Naming of a 9-gon
A polygon with 9 vertices is called a nonagon (in English) or enneagon (French ennéagone, but the English version is sometimes used)
You had a good start with the correct answer.

Exterior angle of a 15-gon
The exterior angle of a 15-gon can be calculated using the relation given in the first paragraph, namely
Exterior angle = 360/15=24 degrees
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den301095 [7]


6 tenths or 6/10

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Hope that helps you. :-)

4 0
3 years ago
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anyanavicka [17]

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8 0
3 years ago
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8_murik_8 [283]
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4 0
3 years ago
A nick on the edge of a CD rotates to (−6, 5) during one song when represented graphically.
Allisa [31]
By definition, the sine of an angle is given by:
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6 0
3 years ago
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S_A_V [24]

Answer:

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6 0
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