Suppose (9, 14) and (3, −10) are the endpoints of a diameter of a circle. What is the equation of the circle?
A) (x + 6)2 + (y + 2)2 = 31
B) (x − 6)2 + (y − 2)2 = 40
C) (x − 6)2 + (y + 2)2 = 40
D) (x − 6)2 + (y − 2)2 = 153

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°