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Question

If one angle of a parallelogram is of measure 70, find the measures of all the angles of the parallelogram.

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Solution

Letparallelogrambe PQRS

LetP=70(given)

R=70(oppositeanglesofparallelogramareequal)

P+Q=180(Interiorsidesonsamesideoftransversal)

P=70

Q+70=180
Q=18070

Q=110

Q=S(oppositeanglesofparallelogramareequal)

QandSareequal

S=110

anglesofparallelogramareQ=1100,R=700,andS=1100

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