A regular polygon has possible angles or rotational summetry of 20, 40, and 80 degrees. How many side does the polygon have?
2 answers:
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 =
I.e n =
So, n = 18
Hence the number of sides the polygon have 18 Answer
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Answer:
a)
b)
c)
d)
e)
Step-by-step explanation:
a) 8 = 2 x 2 x 2
b) 32 = 2 x 2 x 2 x 2 x 2
c) 256 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2
d) 5 x 2^3 / 64 = 5 x 8 / 64
= 40/64
= 5/8
=
e) 16 - (-2)^3 = 16 - (-8)
= 16 + 8
=