Question

39. PQ, QR and RS are three consecutive sides of a regular polygon. Find
the number of sides in the polygon, if QPR = 20°

Answer 1

Answer:

9 sides

Step-by-step explanation:

angle QPR=20

So angle QRP=20(QR=QP)

angle RQP 180-40(angle sum property of a

triangle)

=140

So one exterior angle = 180-140 = 40

.. number of sides =

360

40

= 9 sides