nomor 23 & 24 pakai cara ya makasih

26. POR + QOR = 180
 (5x-3) + (5x+33)= 180
10x+30 = 180
10x = 180-30
x = 150 :10 = 15
sudut QOR = 5x + 33 = 5(15) + 33 = 75 + 33 = 108
pelurus QOR = 180-108 = 72 derajat
27. ABC + CBD = 180
4x + 6x +10 = 180
10x+10 = 180
10x=180-10
x=170:10 = 17
sudut CBD = 6x+10 = 6(17)+10= 112
sudut ACB = CBD-CAB
                  =112-54= 58

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