Geometry

Question Analysis
This question involves identifying the original statement from its contrapositive and determining its truth value.

Key Concept Explanation:
The contrapositive of "If P, then Q" is "If not Q, then not P."
The original statement and its contrapositive are logically equivalent.

Step-by-Step Solution:
Contrapositive: "If a triangle does not have all angles equal to 60 degrees (not Q), then it is not equilateral (not P)."
Original statement: "If a triangle is equilateral (P), then all its angles are 60 degrees (Q)."
The original statement is true because all equilateral triangles have angles of 60 degrees.

Option Analysis:
A: Correct original statement and true.
B: This is the converse, which is true but not the original statement.
C: T...