The bisectors of the angle of a parallelogram enclose a ?
In the following diagram, the bisectors of interior angles of the parallelogram PQRS en-close a quadrilateral ABCD.
Show that: (i) ∠PSB+∠SPB=90∘(ii) ∠PBS=90∘ (iii) ∠ABC=90∘(iv) ∠ADC=90∘ (v) ∠A=90∘(vi) ABCD is a rectangleThus, the bisectors of the angles of a parallelogram enclose a rectangle.
The bisectors of base angles of a triangle cannot enclose a right angle in any case.