Step-by-step explanation: if one angle is 30 ,then according to the properties of parallelogram, the opposite angle is also 30.then also according to the property of parallelogram, the sum of two adjacent angles is 180. therefore,30+x=180. therefore we can find that the third angle is 130,by 180-30. now the angle opposite to 130 is also 130.hence, the answer….

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Answer:30, 30 ,150, 150

Step-by-step explanation: if one angle is 30 ,then according to the properties of parallelogram, the opposite angle is also 30.then also according to the property of parallelogram, the sum of two adjacent angles is 180. therefore,30+x=180. therefore we can find that the third angle is 130,by 180-30. now the angle opposite to 130 is also 130.hence, the answer….PLEASE MARK MY ANSWER AS THE BRAINLIEST!!!!