Question

In the diagram, P1P2 and Q1Q2 are the perpendicular bisectors of line AB and BC , respectively. A1A2 and B1B2 are the angle bisectors of angle A and B , respectively. The center of the inscribed circle of ΔABC is point ____ , and the center of the circumscribed circle of ΔABC is point ____ .

Answer 1

Blank 1 is "S"

Blank 2 is "P"

Answer 2

I hope I can show the image, but I hope this may help you, the answer is:

The center of the inscribed circle of ΔABC is point S , and the center of the circumscribed circle of ΔABC is point P.