Answer:
Graph 1 ⇒ Perpendicular
Graph 2 ⇒ Neither
Graph 3 ⇒ Parallel
Graph 4 ⇒ Neither
Explanation:
- Perpendicular lines: two lines intersected at a point and formed 4 right angles at this point.
- Parallel lines: two lines move in the same direction and never intersect each other.
Let us study each Graph
Graph 1:
∵ There are two intersected lines at a point
∴ They are not parallel
∵ The angles at the point of intersection are right angles
∴ The two lines are perpendicular
Graph 2:
∵ There are two intersected lines at a point
∴ They are not parallel
∵ The angles at the point of intersection are not right angles
∴ The two lines are not perpendicular
∴ The two lines are neither parallel nor perpendicular
Graph 3:
∵ The two lines not intersected at a point
∴ The two lines are not perpendicular
∵ They are in the same direction
∴ The two lines are parallel
Graph 4:
∵ The two lines not intersected at a point
∴ The two lines are not perpendicular
∵ They are NOT moved in the same direction
∴ The two lines are not parallel
∴ The two lines are neither parallel nor perpendicular