a. Tentukan AB
AB = √ (DC⊃2; + ((AD-BC)⊃2;)
AB = √ (4⊃2; + ((4 - 3)⊃2;)
AB = √ (4⊃2; + 1⊃2;)
AB = √ (16 + 1)
AB = √ 17
b. Tentukan BD!
BD = √ (CD⊃2; + BC⊃2;)
BD = √ (4⊃2; + 7⊃2;)
BD = √ (16 + 49)
BD = √ 65
Tentukan AB!
AB = √ (BD⊃2; - AD⊃2;)