Introduction to Angles Complementary and Supplementary.
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Transcript of Introduction to Angles Complementary and Supplementary.
![Page 1: Introduction to Angles Complementary and Supplementary.](https://reader036.fdocuments.in/reader036/viewer/2022082711/56649ec85503460f94bd47da/html5/thumbnails/1.jpg)
Introduction to AnglesComplementary and Supplementary
![Page 2: Introduction to Angles Complementary and Supplementary.](https://reader036.fdocuments.in/reader036/viewer/2022082711/56649ec85503460f94bd47da/html5/thumbnails/2.jpg)
Lines, Rays, and Angles
A line goes forever in both directions.It is perfectly straight, and never ends.
A ray goes forever in one direction. It has one endpoint.
An angle is two rays that share an endpoint.
![Page 3: Introduction to Angles Complementary and Supplementary.](https://reader036.fdocuments.in/reader036/viewer/2022082711/56649ec85503460f94bd47da/html5/thumbnails/3.jpg)
Parts of an Angle• The point where the rays intersect is
called the vertex of the angle.
• The two rays are called the sides of the angle.
![Page 4: Introduction to Angles Complementary and Supplementary.](https://reader036.fdocuments.in/reader036/viewer/2022082711/56649ec85503460f94bd47da/html5/thumbnails/4.jpg)
Naming Angles• Use the vertex and a point from each ray to
name the angle. The vertex must be the middle letter. A
B C
Sometimes we put this symbol in front of an angle:
ABC
CBA
![Page 5: Introduction to Angles Complementary and Supplementary.](https://reader036.fdocuments.in/reader036/viewer/2022082711/56649ec85503460f94bd47da/html5/thumbnails/5.jpg)
Vertexes and Sides
![Page 6: Introduction to Angles Complementary and Supplementary.](https://reader036.fdocuments.in/reader036/viewer/2022082711/56649ec85503460f94bd47da/html5/thumbnails/6.jpg)
Complementary Angles• Two angles are called complementary angles
if the sum (add) of their degree measurements equals 90 degrees.
• Complementary Angles make a Right Angle.
![Page 7: Introduction to Angles Complementary and Supplementary.](https://reader036.fdocuments.in/reader036/viewer/2022082711/56649ec85503460f94bd47da/html5/thumbnails/7.jpg)
Example:Complementary Angles
![Page 8: Introduction to Angles Complementary and Supplementary.](https://reader036.fdocuments.in/reader036/viewer/2022082711/56649ec85503460f94bd47da/html5/thumbnails/8.jpg)
Supplementary Angles
• Two angles are called supplementary angles if the sum of their degree measurements equals 180 degrees.
• Supplemental Angles make a Straight Line.
![Page 9: Introduction to Angles Complementary and Supplementary.](https://reader036.fdocuments.in/reader036/viewer/2022082711/56649ec85503460f94bd47da/html5/thumbnails/9.jpg)
Example:Supplementary Angles
![Page 10: Introduction to Angles Complementary and Supplementary.](https://reader036.fdocuments.in/reader036/viewer/2022082711/56649ec85503460f94bd47da/html5/thumbnails/10.jpg)
Find the complementary and supplementary angles for each.Use half sheet of paper.
1) 73 2) 40 3) 29
2) 87 5) 56 6) 13