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Published byAlexandra Hernandez Modified over 4 years ago

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**Measuring and Drawing Angles with a Protractor By Christine Berg Edited By V Hamilton**

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Protractor Center Hole

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Protractor Straight Edge

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Protractor Curved Edge

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**Place the center hole over the vertex of the angle**

Step 1: Place the center hole over the vertex of the angle

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**Line up (make parallel) the straight edge with one side of the angle**

Step 2: Line up (make parallel) the straight edge with one side of the angle

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Step 3: Find the point where the second side of the angle intersects with the curved edge

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**Read the number on the protractor to find the measure of the angle**

Step 4: Read the number on the protractor to find the measure of the angle

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**Drawing Angles with a Protractor**

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**Draw a ray with the straight edge of the protractor**

Step 1: Draw a ray with the straight edge of the protractor

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**Place the center hole over the starting point of the ray**

Step 2: Place the center hole over the starting point of the ray

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**Place a dot at the angle measure required**

Step 3: Place a dot at the angle measure required

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Step 3: Line up the straight edge over the starting point of the ray and the dot

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Step 4: Draw a ray connecting the two marks. The point at which they meet is called the vertex

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**Draw an angle which measures 120o**

Try this: Draw an angle which measures 120o

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Answer: ^ >

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