Intersection of Medians-Centroid Intersection of Altitudes-Orthocentre
An intersection
A Vertex is the point of intersection, and a Perpendicular Vertex is a vertex with all 90 degree angles, to be specific.
The point of intersection of two sides of a polygon is called a vertex. A vertex describes the intersection or corners of a shape.
The car to the rightAnother View: Above answer is incorrect. If the intersection is uncontrolled by any signs or signal, the car which approached the intersection from the bottom leg of the tee (i.e.: the road which ended at the intersection) yields to the through-roadway.
a controlled intersection
A controlled intersection.
Stop signs
It's called stakeout. The police officer will park nearby, of course with their lights off, and watch the intersection as a spotcheck on drivers at that intersection.
An intersection that does not have a stop light or stop signs to control the flow of traffic
proceed through the intersection with caution
A driver must not stop in an intersection or on a road within 20 m of the nearest point of an intersecting road at an intersection with traffic lights. A driver must not stop in an intersection or on a road within 10 m from the nearest point of an intersecting road at an intersection without traffic lights.
At an intersection where there is no stop sign or traffic signal (with the exception of roundabouts), drivers must yield to vehicles coming from the right. When approaching a roundabout intersection, always yield to traffic in the circle and pedestrians in the crosswalks. Wait for a gap in traffic before entering.
Safety signs are green because green has been adopted as a color indicating safety. This may derive from the fact that traffic lights use green to indicate that is it "safe" to drive through an intersection.
Intersection of Medians-Centroid Intersection of Altitudes-Orthocentre
An intersection
That intersection is called a "CELL".