1 / 14

Discovering Angles: Triangle Properties with Shirley Sides

Learn about angles in a triangle with Shirley Sides in this educational resource from 2006. Understand key definitions including polygon, angle, degree, and triangle, as well as the properties of triangles such as angle sums equalling 180º. Test your knowledge with angle calculations and find missing angles in different triangle scenarios.

forrest-beck
Télécharger la présentation

Discovering Angles: Triangle Properties with Shirley Sides

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 in a Triangle By Shirley Sides 2006

  2. Definition • Polygon – a closed many straight-sided figure.

  3. Definition • Angle – two rays that meet at a common end point.

  4. Definition • Degree – a unit of measurement of an angle or arc, represented by the symbol º. 30º

  5. Definition • Triangle – a polygon with 3 angles and 3 straight sides.

  6. Property of triangles • The sum of all the angles equals 180º degrees. 60º 90º 30º

  7. Property of triangles • The sum of all the angles equals 180º degrees. 60º 90º 30º + 60º 180º 90º 30º

  8. Property of triangles • The sum of all the angles equals 180º degrees. 40º 90º 40º 50º + 180º 90º 50º

  9. Property of triangles • The sum of all the angles equals 180º degrees. 60º 60º 60º 60º + 180º 60º 60º

  10. What is the missing angle? 70º 70º ? ? + 180º 70º 70º

  11. What is the missing angle? 90º 30º ? ? + 30º 90º 180º

  12. What is the missing angle? 60º 60º ? ? + 180º 60º 60º

  13. What is the missing angle? 30º ? 78º ? + 78º 30º 180º

  14. What is the missing angle? 40º ? 40º ? + 40º 40º 180º

More Related