Hot dogs are sold in packs of 10. buns are sold in packs of 8. what is the least number of hot dogs you can buy so that you can also buy a matching number of buns?

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 statements

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