Geometry

Question Analysis:
Focuses on proving sides are perpendicular.

Key Concept Explanation:
Perpendicular lines have slopes that are negative reciprocals.

Step-by-Step Solution:
Use slope formula: (y₂ - y₁)/(x₂ - x₁).
If the product of two slopes = -1 → lines are perpendicular.

Option Analysis:
A) Midpoint finds centers, not direction → ❌
B) Slope proves perpendicularity → ✅
C) Distan...