Question

i need to know to work it out please

Answer 1

a.) a=40 degree (Since it is a regular polygon, the total angle at the centre is 360 degree, each angle is a equal between two lines across adjacent vertex)

b.) from O the lines to the vertex are equidistant therfore OP and OQ are equal, therefore it is an isosceles triangle.

c.) b=70 degree ( since angle b and angle P are equal and third angle is 40, therefore b=P=(180-40)/2)