Geometry

Question Analysis:
This question uses a contradiction proof to show equality in circle chords.
The main focus is showing how inequality leads to a contradiction with known geometric facts.

Key Concept Explanation:
In a circle: equal-distance chords ⇒ equal length
Contradiction logic:
Assume chords are equidistant
But not congruent
Use triangle properties to prove this leads to inconsistency

Step-by-Step Solution:
A: ✅ Start with hypothesis
B: ✅ Negate the conclusion
C: ✅ Known geometric property: unequal chords have unequal distances
D: ✅ Use radius/perpendicular segments and right triangles
E: ❌ This assumes the conclusion instead of negating it — not contradiction

Option Analysis:
A. ✅ Hypothesis
B. ✅ Negation of conclus...