1 / 16

Angle Relationships in Triangles

Angle Relationships in Triangles. Geometry 4.2. Remember!. The sum of the angle measures of a triangle is 180° This is for every triangle. Remember!. Order matters with congruency statements. Means: A and E correspond B and F correspond C and G correspond. Remember!.

bebe
Download Presentation

Angle Relationships in Triangles

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. Angle Relationships in Triangles Geometry 4.2

  2. Remember! The sum of the angle measures of a triangle is 180° This is for every triangle

  3. Remember! Order matters with congruency statements. Means: A and E correspond B and F correspond C and G correspond

  4. Remember! • The Bigger an angle is, the larger the side opposite! • The smaller an angle is, the smaller the side opposite! Middle Biggest Shortest Middle Middle Smallest Longest Longest Shortest Biggest Smallest Middle

  5. Auxiliary Line • An auxiliary line is a line that is added to the figure to aid in the proof

  6. Corollary • A corollary is a theorem whose proof follows directly from another theorem.

  7. Interior vs. Exterior • The interior is the set of all points inside the figure. • The exterior is the set of all points outside the figure.

  8. Interior vs. Exterior Angles 4 is an exterior angle. 3 is an interior angle.

  9. Remote Interior Angle 4 is an exterior angle.

  10. Theorem 50° 50° 100°

  11. Example Find the measure of <B

  12. Example Find the measure of <ACD

  13. Theorem

  14. Example Find measure of <K and <J

  15. Example Find measure of <P and <T

  16. Class work • Page 227: • 6, 7, 9-14, 19, 35

More Related