Question

In the figure the vertices of the polygon ABCDEFGH are points on a circle with centre O.

a) What is ZAOB?

b) Construct a 8 sided regular polygon with vertices on a circle of radius 3 centimetre.​

Answer 1

Step-by-step explanation:

ABCDEFGH is a regular octagon so, all side of octagon is equal.

∠AOB = 360/8 = 45°

In triangle AOB, OA = OB

SO, ∠OAB = ∠OBA

⇒ 2 × ∠OAB + ∠AOB = 180

⇒ ∠OAB = 135/2

The ratio of ∠OAB to ∠AOB = 135/2 : 45 = 3 : 2

Answer 2

Answer:

your answer in the attachment