answers no.3 bagian a (i) AG ? (ii) DC? (iii) besar sudut ADC? (iv) BC?

a) AD = 12, DG = 4,5

(i) AG = AD - DG = 12 - 4,5 = 7,5 cm

(ii) DC/GF = AD/AG
DC/14 = 12/7,5
DC/14 = 1,6
DC = 14 . 1,6 = 22,4 cm

(iii) sudut ADC = sudut AGF = 108° (sudut sehadap)

(iv) BC/EF = AD/AG
BC/8 = 12/7,5
BC/8 = 1,6
BC = 8 . 1,6 = 12,8 cm