A triangle is defined by the points (5, 6), (9, 17), and (-2, 1). Find the coordinates of the centroid of the triangle.

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh