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a. <QOR = 2 x <QPR = 2x 50 = 100
b. <OQR = 1/2 ( 180 - <QOR) = 1/2 (180-100)= 40
c.<QPR = <PQO + <OQR = 35 + 40 = 75
4.
a) <POQ = 180 - 2(<PQO) = 180 - 2(62)= 180- 124 = 56
dan <PRQ = 1/2 (<POQ) = 1/2 (56) = 28
b) <QPR = <PRQ = 28 (sudut segitiga sama kaki)
c) <RQO = 180 - 62 - 28 - 28 = 52
5.
a. <AOC = 2 x <ADC = 2 x 55 = 110
b. Refles <AOC = 360 - <AOC = 360 - 110 = 250
c. <ABC + <ADC = 180
<ABC = 180 -.<ADC = 180 - 55 = 125