Hi please help with this problem, show your work on how you got to the answer so I can understand. thank you and please help with steps a, b and c. thank you

Step 2: Construct regular polygons inscribed in a circle. a) While constructing an equilateral triangle or a regular hexagon inscribed in a circle, you may have noticed that several smaller equilateral triangles are formed, like APQR shown in the figure below. Explain why APQR is an equilateral triangle. R / D b) The completed construction of a regular hexagon is shown below. Explain why AACF is a 3060-90 triangle. c. If you are given a circle with center C, how do you locate the vertices of a square inscribed circle 0