A later schools question and answer asked students to express what they ponder is the most important challenge for a student to do in order to accomplish success. Of the many comments, the one which that stood out was practice. People who definitely successful do not become successful by being born. They work hard and commitment their lives to succeeding. This is how you can get your goals. followed below some question and answer examples that you will be able to utilise to enrich your knowledge and gain insight that will help you to sustain your school studies.

## Question:

Which biconditional is NOT a good definition?

A) An angle is straight if and only if its measure is 180.

B) A whole number is even if and only if it is divisible by 2.

C) A whole number is odd if and only if the number is not divisible by 2.

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

## Answer:

A** biconditional statement **is a statement of the form:

P if and only if Q.

Where P and Q are two** propositions**, and this means that P is only true if Q is true, and Q is only true if P is true.

We will see that the correct option is D ” A ray is a bisector of an angle if and only if it splits the angle into two angles”

*To see which one is the correct option, we need to see where we have a definition problem. *

A) “An angle is straight if and only if its measure is 180.”

A straight angle is a 180° angle, so this is** correct.**

B) ” A whole number is even if and only if it is divisible by 2.”

All even numbers are multiplies of 2, thus, all even numbers are divisible by 2, so this is** correct.**

C) “A whole number is odd if and only if the number is not divisible by 2.”

Odd numbers are all of these that are not multiples of 2. So all odd numbers are not divisible by 2, so this is **correct.**

D) “A ray is a bisector of an angle if and only if it splits the angle into two angles”

This is** incorrect,** the bisector splits the angle into two **equal** angles.

Then the **biconditional** that is not a good definition is the last one, option D.

If you want to learn more, you can read:

They could hopefully assist the student deal with the question by working with the questions and answer examples. You could certainly then have a discussion with your classmate and continue the school learning by studying the question together with each other.