How do u doo this

put a dot backwards 3 squares and up 2 from the center.

then you want to put a dot labeled k that would make a slope 4 squares long (-2, 1)

b doesn't specify how long the slope should be so I would just put a line labeled l and connect that up to j

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

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step-by-step explanation: