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Or-1+x) and verify your answer.27 The anglof the parallelogram is 45°. Find the angles of the Parallelogram.e angle between the two altitudes of a parallelogram through the vertex of an obtuse angle

Answer»

In quad. DPBQ, by angle sum property we have

∠PDQ + ∠DPB + ∠B + ∠BQD = 360°

45° + 90° + ∠B + 90° = 360°

∠B = 360° – 225

Therefore, ∠B = 135

But ∠B = ∠D = 135 opposite angles of parallelogram

As, AB || CD opposite sides of a parallelogram

∠B + ∠C = 180° sum of adjacent interior angles is 180°

135 + ∠C = 180°

∠C = 180° – 135° = 45

Hence ∠A = ∠C = 45 Opposite angles of parallelogram are equal



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