What does the greater than sign with the line under it mean?

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

According to the number line, what is the distance between points a and b? v ++ + + + + -16 -14 -12 -10 -8 + 6 + 4 + -2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 o6 units o 7 units 12 units o 14 units

Secant be and cf intersect at point d inside a what is the measure of cde