A biconditional statement, expressed as "P if and only if Q" (P ↔ Q), can be rewritten as two conditional statements: "If P, then Q" (P → Q) and "If Q, then P" (Q → P). This means that both conditions must be true for the biconditional to hold. Essentially, the biconditional asserts that P and Q are equivalent in truth value.
Yes
yes
If lines lie in two planes, then the lines are coplanar.
true
What is negation of biconditional statement?
A biconditional is a statement wherein the truth of each item depends on the truth of the other.
It is the biconditional.
a condtional statement may be true or false but only in one direction a biconditional statement is true in both directions
Yes
yes
A biconditional is a statement wherein the truth of each item depends on the truth of the other.
If lines lie in two planes, then the lines are coplanar.
A biconditional is the conjunction of a conditional statement and its converse.
true
No, not always. It depends on if the original biconditional statement is true. For example take the following biconditional statement:x = 3 if and only if x2 = 9.From this biconditional statement we can extract two conditional statements (hence why it is called a bicondional statement):The Conditional Statement: If x = 3 then x2 = 9.This statement is true. However, the second statement we can extract is called the converse.The Converse: If x2=9 then x = 3.This statement is false, because x could also equal -3. Since this is false, it makes the entire original biconditional statement false.All it takes to prove that a statement is false is one counterexample.
Definition