Geometry

Question Analysis:
Test of coordinate geometry: midpoint, distance, and angle (slope).

Key Concept Explanation:
Midpoint: average x and y
Distance: √[(x₂ − x₁)² + (y₂ − y₁)²]
Perpendicular: slopes are negative reciprocals

Step-by-Step Solution:
A) KL: K(6, 3), L(6, 7) → midpoint = (6, 5) ❌
B) JK: J(2, 3), K(6, 3) → length = |6 − 2| = 4 ❌
C) JK (horizontal), KL (vertical) → perpendicular, so this is false ❌
D) JM...