Question

vocabulary

1. diameter: the distance across a circle through its type answer here.
2. circumference: the distance around the circle.
3. radius: half the diameter of a circle.

Explanation:

Identify the missing vocabulary term

The sentence defines "Diameter" as: "The distance across a circle through its [blank]."

Complete the definition

By geometric definition, a diameter is a straight line segment that passes through the center of the circle and whose endpoints lie on the circle. Therefore, the missing word is "center".

Answer:

1. Diameter: The distance across a circle through its <blank>center</blank>.