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Answer :

Answer:

x = 60°

Step-by-step explanation:

Triangle Sum Theorem: The sum of interior angles always equals 180°.

We are already given two angles, 30° and 90°. Add these together and subtract it from 180° to get your answer.

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Answer:

x=60

Step-by-step explanation:

Because a triangleś angles need to be summed to 180 degreeś.

90+30+x=180

180-90=90

90-30=60

x=60

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