Lines, Points, Rays, Line Segments

Front

What is a point in geometry?

Back

A point is a specific location in space that has no size or dimension. It is usually represented by a dot.

Front

What is a line in geometry?

Back

A line is a straight path that extends infinitely in both directions. It has no endpoints.

Front

What is a ray in geometry?

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

What is a line segment?

Back

A line segment is a part of a line that has two endpoints.

Front

How is a line represented in geometry?

Back

A line is represented by two points on the line with a double-headed arrow above them, e.g., @@ ext{Line } ightarrow T S@@.

Front

How is a ray represented in geometry?

Back

A ray is represented by its starting point and another point on the ray with a single-headed arrow above them, e.g., @@ ext{Ray } ightarrow T S@@.

Front

How is a line segment represented in geometry?

Back

A line segment is represented by its two endpoints with a line above them, e.g., @@ ext{Line Segment } ightarrow ar{T S}@@.

Front

What is the difference between a line and a line segment?

Back

A line extends infinitely in both directions, while a line segment has two endpoints and does not extend infinitely.

Front

What is the difference between a ray and a line segment?

Back

A ray starts at a point and extends infinitely in one direction, while a line segment has two endpoints and does not extend infinitely.

Front

What is an angle in geometry?

Back

An angle is formed by two rays that share a common endpoint, called the vertex.