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What Is A Angle Angles are to rays that touch a vertex Angles are measured in degrees.

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Presentation on theme: "What Is A Angle Angles are to rays that touch a vertex Angles are measured in degrees."— Presentation transcript:

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2 What Is A Angle Angles are to rays that touch a vertex Angles are measured in degrees

3 Acute Angles An acute angle is a angle that is more than 0 degrees but is less than 90 degrees

4 Right Angles A right angle is a angle that is exactly 90 degrees

5 Obtuse Angles An obtuse angle is a angle that is more than 90 degrees but less than 180 degrees

6 Straight Angles A straight angle is a angle that is exactly 180 degrees

7 How to estimate an angle You can do the paper trick. You take a piece of paper and fold it a special way, then actually put it on the angle that you are estimating on. Put the corner that fits or close to it on the angle. Http://www.youtube.com/watch?v=Y86KgbLyoBQ&sa fety_mode=true&persist_safety_mode=1&safe=active://www.youtube.com/watch?v=Y86KgbLyoBQ&sa fety_mode=true&persist_safety_mode=1&safe=active

8 The Protractor A protractor is a tool used for measuring angles. It has a baseline, midpoint, inner and outer scale, and degrees on it. Protractors are to angle as

9 Measuring Angles To measure an angle you put the vertex on the midpoint and line it up with the rays. Then you use whichever scale is needed to measurer the angle. Read the scale and you get the angle degree. The wrong scale means that you measure using the wrong scale. Http://www.youtube.com/watch?v=FeclDm7pVcI&saf ety_mode=true&persist_safety_mode=1&safe=active://www.youtube.com/watch?v=FeclDm7pVcI&saf ety_mode=true&persist_safety_mode=1&safe=active

10 How to draw an Angle Start with drawing a vertex. Put another dot at the 180 degree line. Connect the dots with a ruler. Place your protractor back onto the line. Put another dot where the degree needs to be. Connect the dots. Double check using your protractor that it is the correct degree.http://www.youtube.com/watch?v=P4- 3oXmgBsM&safety_mode=true&persist_safety_mode= 1&safe=activehttp://www.youtube.com/watch?v=P4- 3oXmgBsM&safety_mode=true&persist_safety_mode= 1&safe=active

11 Successes I thought drawing and measuring angles were easy

12 Challenges One of my challenges were estimating angles. I didn’t find any thing that boring. There nothing that I don’t really understand.

13 THANK YOU FOR WATCHING!!!!


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