1 / 14

Angles

Angles. Right Acute Obtuse. TEKS. (6)   Geometry and spatial reasoning. The student uses geometric vocabulary to describe angles, polygons, and circles. The student is expected to: (A)  use angle measurements to classify angles as acute, obtuse, or right. Angle. What is a Angle?

jensen
Download Presentation

Angles

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Angles Right Acute Obtuse

  2. TEKS • (6)  Geometry and spatial reasoning. The student uses geometric vocabulary to describe angles, polygons, and circles. The student is expected to: (A)  use angle measurements to classify angles as acute, obtuse, or right

  3. Angle • What is a Angle? • - Two rays that share the same endpoint from 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.

  4. What do we use to help us? A protractor Here is a standard protractor like you use in the classroom.

  5. When we use a protractor, we need to line it up correctly. You need to make sure the protractor is lined up correctly. Is this ready to measure the angle?

  6. Were you right......................it wasn’t Look for the upside down ‘T’ in the middle of the straight line on your protractor. This needs to be exactly on the vertex of your angle.

  7. We need to remember..... It doesn’t matter which way round the angle is, you ALWAYS need to line the upside down ‘T’ to the vertex of the angle.

  8. Right Angle • What is a Right Angle? • - an angle whose measure is 90 degrees. This angle is 90 degree. Therefore, it is a Right triangle.

  9. Right Angle around Us Can you find right angles?

  10. Acute Angle • What is a Acute Angle? • - an angle whose measure is less than 90 degrees. Hmm.. This angle is about 77 degree which is less than 90 degree. Therefore, it is a Acute triangle.

  11. Acute Angle around Us Can you find acute angles?

  12. Obtuse Angle • What is a Obtuse Angle? • - an angle whose measure is more than 90 degrees. Wow, This angle is 103 degree. Hmm.. This is bigger angle than 90 degree angle. Therefore, it is a Right triangle.

  13. Obtuse Angle around Us Can you find obtuse angles?

  14. Reference • http://themarketingguy.wordpress.com/2007/06/14/ • http://www.mathsisfun.com/angles.html • www.freephotobank.com • http://www.baskinrobbins.com • http://www.faqs.org/photo-dict/phrase/1274/waffle.html • http://www.babygadget.net/robotA280.jpg • http://www.blueberryforest.com/images/Images_haba/haba-milk-carton-mini-271x392.jpg • http://image.misterart.com/grouppix/528x352/2000/g2025.jpg • http://img.timeinc.net/recipes/i/recipes/sl/03142008/cheesecake-sl-520368-l.jpg • http://www.tenthousandvillages.com/nav/product/zoom_6600360.jpg • http://www.electricpig.co.uk/wp-content/uploads/2008/11/ep_sandwich.jpg • http://www.fotosearch.com/bthumb/SUE/SUE104/BWBW0867.jpg • http://www.catawbaschools.net/schools/BallsCreek/Images1/pizza.jpg • http://img.alibaba.com/photo/101176672/Model_Planes_Rc_Model_Rc_Hobby_Rc_Toy_Rc_Plane_Rc_Airplane.jpg • http://www.brake.org.uk/resources/images/alex%20letter%20A.jpg

More Related