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<ol><li><strong>Titik A(-4, -6) dan B(8, -10)</strong> AB = √[(8 - (-4))² + (-10 - (-6))²] AB = √[(12)² + (-4)²] AB = √(144 + 16) AB = √160<strong>AB = 4√10 satuan</strong></li><li><strong>Titik C(12, -10) dan D(-4, -8)</strong> CD = √[(-4 - 12)² + (-8 - (-10))²] CD = √[(-16)² + (2)²] CD = √(256 + 4) CD = √260<strong>CD = 2√65 satuan</strong></li><li><strong>Titik E(-10, 6) dan F(-4, -8)</strong> EF = √[(-4 - (-10))² + (-8 - 6)²] EF = √[(6)² + (-14)²] EF = √(36 + 196) EF = √232 <strong>EF = 2√58 satuan</strong></li></ol><p><strong>Jadi, panjang garis-garis tersebut adalah:</strong></p><ul><li>AB = 4√10 satuan</li><li>CD = 2√65 satuan</li><li>EF = 2√58 satuan</li></ul><p><br>&nbsp;</p>