Can anybody explain to me what this question mean so it says "8 more than a number n is written in algebraic form"

Which pair of angles are vertical angles? ∠1 and ∠4∠1 and ∠2∠2 and ∠4∠2 and ∠3more than one answer.

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )