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SashulF [63]
3 years ago
10

A regular polygon has possible angles or rotational summetry of 20, 40, and 80 degrees. How many side does the polygon have?

Mathematics
2 answers:
Pavlova-9 [17]3 years ago
5 0

Answer:

18

Step-by-step explanation:

Ed2020

BARSIC [14]3 years ago
3 0

Answer:

The number of sides regular polygon have = 18

Step-by-step explanation:

The possible angle or rotational symmetry is 20° , 40° , 80° of any regular polygon .

now,

<u>Symmetrical under 20° Rotation is also symmetrical on rotation of any multiple of 20° </u>

So, number of sides = n = \frac{360}{External angle}

I.e                                  n =  \frac{360}{20}

So,                                 n = 18

Hence the number of sides the polygon have 18    Answer  

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