Question

Is each biconditional statement true or false?

Answer 1

i think all three statements are true because the definition of a right angle is an angle that is 90º, and 12º means that its an obtuse angle bc its greater than 90º, and a straight angle is 180º

Answer 2

Answer: All bi-conditional statements are true.

Step-by-step explanation:

Since we have given that

1)  A angle is a right angle if and only if the measure of the angle is 90 degrees - True.

As we know that in right angled triangle, one angle must be of 90°.

2) An angle measures 120 degrees if and only if the angle is an obtuse angle - True

As obtuse angle means angle should be greater than 90° but less than 180°.

And 90°<120°<180°

3) An angle measures 180 degrees if and only if the angle is a straight angle. - True

As we know that measure of straight angle means 180°.

Hence, all bi-conditional statements are true.