Which of the following could you conclude using coordinate geometry?

a. triangle efg is an equilateral triangle.

b. measure of angle e = 120

c. measure of angle f = 99

d. angle e = angle f.

, will mark brainliest.

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.