Geometry

Question Analysis:
This question involves logical equivalence between a statement and its contrapositive.
The main focus is on fundamental logic rules in indirect proofs.

Key Concept Explanation:
A conditional statement “If p, then q (p ⇒ q)” is logically equivalent to its contrapositive “If not q, then not p (¬q ⇒ ¬p)”.

Step-by-Step Solution:
Given that the contrapositive is true, and it is equivalent to the original,
Then the truth of the contrapositive guarantees the truth of the original.
This is a basic rule in propositional logic.

Common Mista...