None, as far as I can see. Which, given that I cannot see any triangle, is not saying much!
oblique
An oblique line can be diagonal, sloping or slanted. It is not vertical, horizontal, parallel or perpendicular.
two diagonal lines that aren't touching
No, it will always have one.
None, as far as I can see. Which, given that I cannot see any triangle, is not saying much!
It depends on the way in which they are written. 4 and 7 clearly have horizontal and oblique lines. The number 1, in some fonts (like this one), also has both. All the rest have sections that are horizontal and those that are oblique.
Oblique
oblique
An oblique line can be diagonal, sloping or slanted. It is not vertical, horizontal, parallel or perpendicular.
run at an oblique angle to vertical direction of the spine.
diagonally between the vertical and horizontal
two diagonal lines that aren't touching
No, it will always have one.
AKMNRVWXYZ
Oblique incidence applies to rays that are incident at some angle OTHER THAN at right angles (90 degrees) to the surface on which they are incident. Vertical incidence IS at right angles.
Oblique is neither vertical nor horizontal to a given line or surface