Point Line Line segment Ray Plane

Geometry

• Point
• Line
• Line segment
• Ray
• Plane
• Parallel lines
• Intersecting lines
• Angles

Geometry

• Point
• An exact location in space
• Line
• An endless collection of points along a straight path
• Line segment
• Part of a line that has two endpoints

• .A

Geometry

• Ray
• Part of a line that has one endpoint and extends endlessly in the other direction
• Plane
• An endless, flat surface that is named by any three points not on the same line.

• .A

• .B

• .C

Geometry

• Parallel Lines
• Lines do not intersect but are in the same plane
• Intersecting Lines
• Lines meet at one point
• Perpendicular Lines
• Lines form a right angle

Angles

• An angle is formed when two rays have the same endpoint.
• This endpoint is called the vertex.
• The two rays that form the angle are called sides.

Angles

• There are four types of angles
• Right angle
• Straight angle
• Acute angle
• Obtuse angle

Right Angles

• Forms a square corner
• Forms a 90 degree angle.
• Use a corner of your index card to make sure you a have a right angle

• 90 degrees

Straight Angle

• Forms a straight line
• Angle is 180 degrees
• Use the edge of your index card to make sure you have a straight angle.

• 180 degrees

Acute Angles

• Forms an angle that is less than a right angle
• Angle is less than 90 degrees

Obtuse Angles

• Form an angle that is more than a right angle
• Angle is more than 90 degrees

Review Name each picture

• Ray
• Parallel lines
• Line

• 1.

• 2.

• 3.

Review Name each picture

• Acute angle
• Line segment
• Point

• 4.

• 5.

• 6.

Review Name each picture

• Intersecting lines
• Perpendicular and Intersecting lines
• Plane