Aplane flew 1,000 miles away from london for one flight. for the next flight, it flew 500 miles toward london. how far was the plane from london after the second flight?

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

what are the things "represented below"?

step-by-step explanation:

nobody can if you dont give the choices