Which incondicional is not a good definition

a ray is a bisector of an angle if and only if it splits the angle into two angles

a whole number is odd if and only if the number is not divisible by two

an angle is straight if and only if its measure is 180

a whole number is even if and only if it is divisible by two

A whole number is even if and only if it divisible by two

the answer is 62.8 cubic units

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: