Răspuns :
MN² = (1 + 1) ² + ( 6 - 0 )² = 4 + 36 = 40 ; MN = √40=√4√10 =2√10
MP² = (1 - 5)² + (6 +2) ² = 16 + 64 = 80 MP = √80 = √16√5 =4√5
NP² = ( -1 -5 )² + (0 + 2) ² = 36 + 4 = 40 NP = √40 = 2√10
⇒ MN ≡NP ⇒ Δ MNP isoscel
MP² = (1 - 5)² + (6 +2) ² = 16 + 64 = 80 MP = √80 = √16√5 =4√5
NP² = ( -1 -5 )² + (0 + 2) ² = 36 + 4 = 40 NP = √40 = 2√10
⇒ MN ≡NP ⇒ Δ MNP isoscel
MN² = (1 + 1) ² + ( 6 - 0 )² = 4 + 36 = 40 ; MN = √40=√4√10 =2√10
MP² = (1 - 5)² + (6 +2) ² = 16 + 64 = 80 MP = √80 = √16√5 =4√5
NP² = ( -1 -5 )² + (0 + 2) ² = 36 + 4 = 40 NP = √40 = 2√10
⇒ MN ≡NP ⇒ Δ MNP isoscel
MP² = (1 - 5)² + (6 +2) ² = 16 + 64 = 80 MP = √80 = √16√5 =4√5
NP² = ( -1 -5 )² + (0 + 2) ² = 36 + 4 = 40 NP = √40 = 2√10
⇒ MN ≡NP ⇒ Δ MNP isoscel