What is the measure of each exterior angle for a regular hexagon? A. 45°
B. 30°
C. 60°
D. 120°

Explanation:

There are n = 6 sides in a regular hexagon, so each exterior angle is E = 360/n = 360/6 = 60

The rule E = 360/n only works for regular polygons with n sides, which means the polygons must have all sides the same length and all angles the same value.

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step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.