The croquet start line is called a baulk line.
A radius
line
There really isn't a specific term to that matter. They're just called ends.
In CAD software, the option that allows you to quickly create a line segment connecting back to the starting point when using the line command is typically called "Close" or "Close Polyline." This option can often be activated by typing "C" after starting the line command, or it may be available as a button or toggle in the interface. It automatically draws a line back to the initial point, completing the shape.
A nine-line stanza is called a "nonet." In this form, the lines typically follow a specific syllable pattern, starting with nine syllables in the first line and decreasing by one syllable in each subsequent line, ending with one syllable in the ninth line. Nonets can be used in various poetic styles and often convey a complete thought or theme within their structure.
The croquet arch is known as a hoop. The objects used to hit the balls in croquet are called mallets.
croquet Mallet
The starting point in a race is called the starting line. The end point of a race is called the finish line.
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Croquet in French is croquet in Italian.
A radius
It's called a mallet.
When a ball has scored its last hoop point, it becomes a rover.
croquet croquet croquet
The playing area for croquet is called a croquet lawn. It is typically a flat, rectangular grass surface where players set up their wickets and boundary markers. The lawn should be well-maintained to ensure smooth gameplay. The size can vary, but a standard lawn is generally around 100 feet by 50 feet.
A line with a point at both ends is called a Segment.
To learn Croquet you have to learn the rules of Croquet and play accordingly. Soccer is a completely different game.