The Quetion of an ellipse is X squared/ 49+ Y squared 81 /equals one the others is centered at the origin find the vertex is or the major axis and determine whether the ellipse is horizontal or vertical major axis

98%

step-by-step explanation:

i think it is c hope that

180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)