Meaning: plural of radius, a line from the center of a circle to its edge

Part of speech: noun

Example: The radii of the circle were measured.

Category: Mathematics

Meaning: angles that form a Z shape

Part of speech: noun

Example: The two lines created Z angles when they intersected.

Category: Mathematics

Meaning: the number 0

Part of speech: noun

Example: Zero is the starting point in mathematics.

Category: Mathematics

Synonyms:

• nil
• nothing

Antonyms:

• one
• positive