Mark wants to sell his condo. Jack and Nick are two prospective buyers. Jack is willing to pay the amount quoted by Mark, while Nick is unable to pay such a high price for the condo. Because Jack is able to pay the asking price, Mark sells his condo to Jack. In which type of economy does this transaction take place? A.
command economy
B.
communist economy
C.
market economy
D.
traditional economy

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.

answer: finding the extract measurements and knowing the points

step-by-step explanation: