(X-3)^2/9+(y-6)^2/16=1
The endpoints of the major axis are:
(-1, 6) and (7,6)

(0,6) and (6,6)
(3, 2) and (3, 10)

step-by-step explanation:

graph using a few selected

x         y

-1       15

0         6

1         2.4

2       0.96

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.

-1

step-by-step explanation: