1 / 9

1-4 Angle Measure

1-4 Angle Measure. Real-World. Vocabulary. Ray - a part of a line Opposite rays- a point on a line determines exactly 2 rays called opposite rays Angle- formed by 2 noncollinear rays that have the same endpoint Vertex - the common endpoint of the angle

drew
Download Presentation

1-4 Angle Measure

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. 1-4 Angle Measure

  2. Real-World

  3. Vocabulary • Ray- a part of a line • Opposite rays- a point on a line determines exactly 2 rays called opposite rays • Angle- formed by 2 noncollinear rays that have the same endpoint • Vertex- the common endpoint of the angle • Interior- all points that lie inside the angle • Exterior- all points that lie outside the angle • Degree- unit of angle measurement • Angle Bisector- a ray that divides an angle into 2 congruent angles

  4. Angle RAY P INTERIOR RAY X 110° L VERTEX EXTERIOR

  5. Types of Angles ACUTE ANGLE -measures less than 90° RIGHT ANGLE -measures 90° OBTUSE ANGLE -measures more than 90°

  6. Examples T Name the vertex of each angle: 1. <4 2. <1 Name the sides of each angle: 3. <4 4.<STV Write another name for each angle: 5. <3 6. <WVT W ST and UT ST and TV <WTV <2

  7. Practice M Name the vertex of each angle: 1. <5 2. <3 Name the sides of each angle: 3. <6 4.<MOP Write another name for each angle: 5. <1 6. <QPR P NO and NM MO and OP <MPO <3

  8. Examples • Classify each angle as right, acute, or obtuse: 7. <NMP 8.<OMN 9. <QMN 10. If <EBD= 4x+16 & <DBC=6x+4, Find <EBD Right Acute BISECTOR Obtuse 4x+16 = 6x+4 4x+16 4(6) +16 = 24+16 <EBD = 40° 12 = 2x 6=x

  9. Practice • Classify each angle as right, acute, or obtuse: 7. <UZW 8.<YZW 9. <TZW 10. If <DCE= 4x+15 & <ECF=6x-5, Find <DCE Right acute BISECTOR Obtuse 4x+15 = 6x-5 20 = 2x X=10 4x+15 4(10)+15 = 40 +15 <DCE = 55°

More Related