Center point
The extreme point is called a vertex.
The point of intersection.
inflection point
That point, (0,0) is called the origin
The middle point of a wave is called the crest or the peak.
The highest point of anything is called the summit.
The point in the middle of a circle is called the center.
The centre point.
The lowest point of a wave is called the trough, while the middle point where the wave is at its highest is called the crest.
Center point
The CENTRE.
midpoint
food
a middle point
It's called the median point.
The point in the middle of a destructive interference pattern is called the node. At the node, the crests of one wave align with the troughs of another, resulting in complete cancellation of the wave amplitudes.