# Lines Line Segments Rays and Angles

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### Lines, Line Segments, Rays and Angles:

Lines, Line Segments, Rays and Angles

### What is a Line?:

What is a Line? A line is a straight path that goes on forever in both directions.

### What is a line segment?:

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

### What is a ray?:

What is a ray? A ray is a part of a line that has one endpoint and goes on forever in one direction.

### What are parallel lines?:

What are parallel lines? Parallel lines are lines that never intersect .

### What is a vertex?:

What is a vertex? A vertex is the point at which two lines or rays meet to form an angle. More than one vertex are called vertices.

### What are intersecting lines?:

What are intersecting lines? Lines that cross at any point are intersecting lines.

### What are perpendicular lines?:

What are perpendicular lines? Two lines that cross to form a right angle are intersecting lines.

### What is a right angle?:

What is a right angle? A right angle is an angle that measures 90 degrees and forms a square.

### What is an acute angle?:

What is an acute angle? An angle that measures less than 90 degrees. “A cute little angle”

### What is an obtuse angle?:

What is an obtuse angle? An obtuse angle is an angle that measures more than 90 degrees.

### Practice Name each figure:

Practice Name each figure 1. 2. 3. 4. 5.

### Intersecting or Perpendicular?:

Intersecting or Perpendicular? 1. 2 . 3.

### Obtuse or Acute?:

Obtuse or Acute? 1. 2. 3 4.