Question

If PQRS is a parallelogram find the value of angle Q + angle R and angle R + angle S

Answer 1

since ,pq || rs
and QR is transversal in ||gm pqrs
there fore,
angle R +angle Q=180°(co-interior angles)
and
since ,ps||qr
and RS is transversal
therefore,
angle R+angle S =180°[co-interior angles]
hope this will help you
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Answer 2

angle r+angle s=180 degree (Co Interior angles)

angle r+angle q=180degree (since they are Co Interior angles)