Points, Lines, Line Segments, Rays, and Angles

Front

What are points in geometry?

Back

Points are exact locations in space that have no size or dimension.

Front

Define a line in geometric terms.

Back

A line is a straight set of points that extends infinitely in both directions.

Front

What is a line segment?

Back

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

Front

What is a ray?

Back

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

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet and are always the same distance apart.

Front

What is an angle?

Back

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

Front

What is the difference between acute, obtuse, and right angles?

Back

Acute angles measure less than 90 degrees, right angles measure exactly 90 degrees, and obtuse angles measure more than 90 degrees but less than 180 degrees.

Front

How do you identify perpendicular lines in a diagram?

Back

Perpendicular lines can be identified by the presence of a right angle (90 degrees) where they intersect.

Front

What is the significance of the symbol for parallel lines?

Back

The symbol '||' is used to denote that two lines are parallel.