In the figure shown below, PQRS is a parallelogram. QU=TU , ∠PUT=110° and ∠RQT=50°
Answers
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Here , ∠ RTQ = ∠ PUQ = 90° , As given : QT ⊥ SR and QU ⊥ PS
Now from angle sum property of triangle we get in ∆ RTQ :
∠ RTQ + ∠ R + ∠ RQT = 180° , Substitute values from given diagram we get :
90° + ∠ R + 50° = 180°
∠ R = 40°
We know adjacent angles are supplementary in parallelogram , So
∠ R + ∠ S = 180° , Substitute value
of " ∠ R " as we calculated above and get :
40° + ∠ S = 180° ,
∠ S = 140°
We know opposite angles in parallelogram are equal to each other , So
∠ P = ∠ R and ∠ Q = ∠ S , So
∠ P = 40° and ∠ Q = 140°
Now from angle sum property of triangle we get in ∆ PUQ :
∠ PUQ + ∠ P + ∠ PQU = 180° , Substitute values from given diagram and as we calculated above we get :
90° + 40° + ∠ PQU = 180°
∠ PQU = 50° --1
And
∠ Q = ∠ PQU + ∠ TQU + ∠ RQT From given diagram and now we substitute values and get :
140° = 50° + ∠ TQU + 50° ,
∠ TQU = 40°
Therefore,
∠ R = 40° , ∠ TQU = 40° , ∠ P = 40° and ∠ S = 140°