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it is equal to 120 .the explanation of it is given before
angle pqr + angle qps is equal to 180 degree
and
also angle qpd + angle pdq + angle p q d is equal to 180 degree
since angle qpd is half of angle pqr so
half of angle pqr + angle qps + angle qps is equal to 180 degree
half of angle pqr + 2 angle qps is equal to 180 degree
so on solving this to equation we get angle pqr is equal to 120 degree and Angle qps is equal to 60 degree
angle pqr + angle qps is equal to 180 degree
and
also angle qpd + angle pdq + angle p q d is equal to 180 degree
since angle qpd is half of angle pqr so
half of angle pqr + angle qps + angle qps is equal to 180 degree
half of angle pqr + 2 angle qps is equal to 180 degree
so on solving this to equation we get angle pqr is equal to 120 degree and Angle qps is equal to 60 degree
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