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Question 30
In a parallellogram PQRS, if P=60, then other three angles are
a) 45,135,120
b) 60,120,120
c) 60,135,135
d) 45,135,135


Solution

Given, P=60

Since, in a parallelogram, adjacent angles are supplementary,
P+Q=18060+Q=180Q=120
Also, opposite angles are equal in a parallelogram.
Therefore, R=P=60,S=Q=120
Hence, other three angles are 60,120,120.

Mathematics
NCERT Exemplar
Standard VIII

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