Lines line segments rays and angles
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Transcript of Lines line segments rays and angles
![Page 1: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/1.jpg)
Lines, Line Segments, Rays and Angles
![Page 2: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/2.jpg)
What is a Line?• A line is a
straight path that goes on forever in both directions. (There are arrows on both sides)
![Page 3: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/3.jpg)
What is a line segment?
. .
• A line segment is part of a line that has two endpoints. (There are periods at the ends telling you when to stop)
![Page 4: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/4.jpg)
What is a ray?
• A ray is a part of a line that has one endpoint and goes on forever in one direction. (One period and one arrow)
![Page 5: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/5.jpg)
What are parallel lines?
• Parallel lines are lines that never intersect. (They Don’t Cross)
![Page 6: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/6.jpg)
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.
![Page 7: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/7.jpg)
What are intersecting lines?
• Lines that cross at any point are intersecting lines.
![Page 8: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/8.jpg)
What are perpendicular lines?
• Two lines that cross to form a right angle are intersecting lines.
![Page 9: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/9.jpg)
What is a right angle?
• A right angle is an angle that measures 90 degrees and forms a square.
![Page 10: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/10.jpg)
What is an acute angle?
• An angle that measures less than 90 degrees.
• “A cute little angle”
![Page 11: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/11.jpg)
What is an obtuse angle?
• An obtuse angle is an angle that measures more than 90 degrees.
![Page 12: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/12.jpg)
PracticeName each figure
1.
2.
3.
4.
5.
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Intersecting or Perpendicular?
1. 2.
3.
![Page 14: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/14.jpg)
Obtuse or Acute?1.
2.
3
4.
![Page 15: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/15.jpg)
What is This?
![Page 16: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/16.jpg)
What type of lines are these?
. .
![Page 17: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/17.jpg)
What type of lines are these?
![Page 18: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/18.jpg)
What type of lines are these?
![Page 19: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/19.jpg)
What type of lines are these? • More than one vertex are called vertices.
![Page 20: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/20.jpg)
What type of lines are these?
![Page 21: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/21.jpg)
What type of lines are these?
![Page 22: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/22.jpg)
What type of angle is this?
![Page 23: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/23.jpg)
What type of angle is this?
![Page 24: Lines line segments rays and angles](https://reader036.fdocuments.us/reader036/viewer/2022062522/589d19f81a28ab61128b62e1/html5/thumbnails/24.jpg)
What type of angle is this?