Question

a point is a location in space that has neither size nor ___.
proof
existence
dimension
understanding

1. choose the best answer.

which choice names an endpoint?
\\( \overleftrightarrow { a c } \\)
\\( \overrightarrow { b c } \\)
\\( \overline { a b } \\)
a

Explanation:

• A point is a fundamental concept in geometry. By definition, a point has no size (length, width, height) and no dimension.
• For the second part, an endpoint is a single point. $\overleftrightarrow{AC}$ is a line (extends infinitely in both directions), $\overrightarrow{BC}$ is a ray (extends infinitely in one direction), $\overline{AB}$ is a line - segment (has two endpoints), and $A$ is a single point which can be an endpoint.

Answer:

• First question: dimension
• Second question: $A$