C. Unit 2 Geometry Definitions Quick Check

Front

A two-dimensional figure extending infinitely in all directions.

Back

plane

Front

Name the intersection of planes R and P.

Back

HI

Front

The point at the end of a line segment or the beginning of a ray.

Back

endpoint

Front

The intersection of any two lines forms a ____________.

Back

point

Front

How many distinct points does it take to form a line?

Back

2

Front

A straight one-dimensional figure having no thickness and extending infinitely in both directions.

Back

line

Front

A part of a line that has a fixed starting point and extends infinitely in one direction.

Back

ray

Front

A flat surface that has no thickness and extends infinitely in all directions.

Back

plane

Front

A figure formed by two rays with a common endpoint.

Back

angle

Front

The measure of the amount of turn between two lines that have a common endpoint (vertex).

Back

degree