bonjour
distance KM = √ [ (38 +3)² + ( 1 + 5)² ]
= √ ( 41)² + ( 6)²
= √ 1681 +36 = √1 717
distance KL = √[( 4 + 3)² + ( - 4 +5)² ]
= √ ( 7)² + (1)²
= √ 49 + 1 = √ 50
distance LM = √ [( 38 +3)² + ( 1 +5)²]
= √ ( 41)² + (6)²
= √ 1 717
tu peux donc conclure