Which pair of undefined terms is used to define a ray?
a. line and plane
b. plane and line segment
c. point and line segment
d. point and line

The answer is "D. Point and line".

Point is the fundamental building square of Geometry. Each shape is made through the joining the focuses. A little spot set apart by a pencil is a point. A point has no length or width. It has no thickness. Point is a sign of position. A point indicates the correct area.

A line abandons end in both directions. The two closures of a line can go to unendingness. A line has no end focuses. The length of a line can't be estimated. A line has no clear length.

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.

i will answer your question if you answer mine