1 / 11

Ch. 1.6 & 1.7

Ch. 1.6 & 1.7. Angles. RAYS . Have an end point and go on forever in one direction. F. H. Name: starting point 1 st , then another point 2 nd Ex:. Definition of an angle. two rays with a common endpoint, called the vertex. ray. vertex. ray. Angles and Points.

zan
Télécharger la présentation

Ch. 1.6 & 1.7

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. Ch. 1.6 & 1.7 Angles

  2. RAYS • Have an end point and go on forever in one direction F H Name: starting point 1st, then another point 2nd Ex:

  3. Definition of an angle • two rays with a common endpoint, called the vertex ray vertex ray

  4. Angles and Points • Angles can have points in the interior, in the exterior or on the angle.

  5. Naming Angles • Three points on the angle • The vertex • A number

  6. Using three points • The vertex point MUST be the middle letter <CBA or <ABC

  7. Using Vertex • Must be the vertex of ONLY ONE angle • Ex: <B

  8. Using a number • A number written inside the angle close to the vertex AND the number is not the measurement • Ex: <2

  9. Angle Addition Postulate m<1 + m<2 = m<ADC • m<1 means the measure of <1 • m<1 + m<2=? m<ADC = 58.

  10. Angle Bisector • An interior ray of an angle splits the angle into two congruent angles • Since <4  <6, then is an angle bisector.

  11. Example • Draw your own diagram and answer this question: • If is an angle bisector of <PMY and m<PML = 87, then find: • m<PMY = _______ • m<LMY = _______

More Related