Maths Challenge
Maths challenge.net: Unique Circle Equal Angles
A "three star geometry problem" - requiring the knowledge of biconditional statements and how to prove such problems.
Oswego City School District
Regents Exam Prep Center: Biconditional: If and Only If
Students studying logic, who already know what conditionals are and how to solve them, are ready to work with biconditionals. This website provides a definition of "Biconditional," and includes examples of biconditionals that are "Used...
Oswego City School District
Regents Exam Prep Center: Working With Logic
Test your logic and knowledge of conditionals, biconditionals, negations, conjunctions, and disjunctions in this twelve-question quiz. Answer each question on your own, then see what the answer and the reasoning behind the answer are.