How to Draw a 200 Degree Angle With a Protractor TUTORIAL

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A protractor is a handy tool used to mensurate and depict angles. Mostly, semi-circular in shape, protractors are also available in full-circle, 360-caste versions. If i look at the object has yous completely dislocated, never fearfulness; learning to utilise the tool is unproblematic. By agreement how the parts of a protractor are used together and following a few easy steps, yous volition be an angle adept in no time.

  1. 1

    Approximate the measure of your angle. Angles can exist classified in three ways: acute, obtuse, and right. Astute angles are narrow (less than 90 degrees), obtuse angles are wide (greater than 90 degrees), and correct angles are exactly 90 degrees (two lines perpendicular to each other).[1] You can easily place by center, the category of angle you are trying to mensurate. Doing this step first helps you identify which scale to use on the protractor.

    • At a glance, we can tell this bending is acute because it is less than 90 degrees.

  2. 2

    Place the origin over the eye point, or vertex, of the angle you want to measure. [ii] The pocket-size hole in the centre of the base of the protractor is the origin. Align the vertex of the angle with the eye of the cross in the origin.

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  3. 3

    Rotate the protractor to align one leg of the angle with the baseline. Maintain the vertex of the angle in the origin and gently rotate the protractor and so that one of the legs of the angle falls on the baseline of the protractor.[three]

    • The baseline is parallel to the edge, but is non the flat edge of the protractor. It is aligned with the center of the origin and the line projects to the kickoff of the calibration on either side.

  4. 4

    Follow the opposite leg of the angle upwardly to the measurements on the protractor's arc. If the line does not pass through the protractor'southward arc, extend the bending's line until it does. Alternatively, you lot can align the border of a piece of newspaper with the bending's leg to pass across the edge of the protractor, continuing the line of the angle. The number the line passes through is the angle'southward measurement in degrees.

    • In the above example, the angle measure is thirty degrees. We know to use the smaller scale because we adamant that our angle was less than 90 degrees in the first step. If the angle was obtuse, we would use the calibration that indicated an angle larger than 90 degrees.
    • Initially, the measurement scale may seem confusing. Nigh protractors have two opposing ruler grids, one on the inner side of the arc and one on the outer. This makes the tool handy for measuring angles originating from either direction.

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  1. one

    Draw a straight line. The line is your reference line and the first leg of your bending. It will exist used to determine the position at which you draw the second leg of the bending. It'southward by and large easiest to draw the straight line in a horizontal position on the paper.

    • You can use the flat border of your protractor to draw this line.
    • The length of the line doesn't thing.

  2. 2

    Place the origin of the protractor at ane end of the line. This point will exist your angle'south vertex. Marker the paper where the vertex is placed.[4]

    • You don't accept to place the bespeak at the border of the line. It can be placed anywhere on the line, but is easier only to apply the end of the line.

  3. 3

    Observe the degree of the angle you wish to draw on the protractor's appropriate calibration. Marshal your reference line with the protractor's baseline and mark the paper at the degree of measurement. If yous are drawing an acute angle (less than xc degrees), use the calibration with the smaller numbers. For obtuse angles (greater than xc degrees), utilize the scale with larger numbers.

    • Remember, the baseline is parallel to the border, simply is not the apartment edge of the protractor. It is aligned with the center of the origin and the line projects to the start of the calibration on either side.
    • In the in a higher place example, the bending is xl degrees.

  4. 4

    Draw the second leg to complete the angle. Using a ruler, the apartment edge of your protractor or another directly edge, connect the vertex with the marked degree, drawing the 2d leg. This second leg completes your angle. To verify you've drawn the angle accurately, use the protractor to measure out it.

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Add New Question

  • Question

    When do I employ the outer scale of the protractor?

    Community Answer

    The inner scale is for angles that open up to the right and the outer scale of the protractor is used to measure angles that open to the left .

  • Question

    How can I tell whether I need to employ a larger or smaller protractor?

    Community Answer

    The bending on a protractor volition ever be the same.You may find it easier to accept a small-scale protractor when only drawing a small line from the angle you are measuring.

  • Question

    Why does the protractor have readings on both sides?

    Community Answer

    And then y'all can read angles form different directions. It'southward kind of like opposite/mirror images.

  • Question

    How do I observe if the angle is negative or positive?

    Donagan

    All angles -- as typically expressed in the context of geometry -- are positive. Any angle you measure with a protractor may be thought of equally positive.

  • Question

    Why is it important to use a protractor?

    Community Answer

    If you want to precisely find the degrees in an bending, the protractor is probably the best tool.

  • Question

    Is an birdbrained or acute angle better?

    Community Answer

    There's no better bending, they are but measurements.

  • Question

    Does it matter what company the protractor is made by?

    Chris (EpcotMagic)

    Chris (EpcotMagic)

    Top Answerer

    No need to worry what company the protract is made by. They all give you authentic measurements of angles, regardless of the company.

  • Question

    Should I start measuring from the left or from the right?

    Donagan

    You can measure from either finish.

  • Question

    Is a right angle ninety degrees?

    Chris (EpcotMagic)

    Chris (EpcotMagic)

    Meridian Answerer

    Yes. A right bending is one that measures 90 degrees. That is mutual knowledge for any student of math to memorize.

  • Question

    How do I decide which scale to utilize when I utilise a protractor to depict or measure an angle?

    Donagan

    The scales are identical. I increases from the left side; the other increases from the right side.

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Things You'll Need

  • pencil/pen
  • paper
  • protractor
  • ruler (optional)

About This Article

Article Summary Ten

You can use a protractor to measure and draw angles. To measure angles with a protractor, starting time place the center betoken along the bottom edge of the protractor over the vertex of the angle you lot're measuring. Line up the bottom edge of the protractor with one leg of the angle. Follow the other leg of the angle up to the protractor's arc to encounter what number it intersects with and notice the degree of the angle. If the angle is facing to the correct, use the bottom row of numbers on the protractor. If the angle is facing left, use the top row of numbers. To draw an bending with a protractor, first place the center point along the lesser edge of the protractor where you lot desire the vertex of the angle to exist. Depict a small dot in the hole on the protractor to mark the vertex. Then, line the bottom border of the protractor up with the vertex and draw a straight line along it. Now, find the hash marking on the protractor that corresponds with the bending you want to describe, and draw a small dot outside of it. Rotate the protractor and line the bottom edge upwards between the vertex and the minor dot. Finally, utilise the bottom edge of the protractor as a straight edge to depict a line betwixt the two points. Keep reading the commodity if you want to learn how to depict angles with your protractor!

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How to Draw a 200 Degree Angle With a Protractor TUTORIAL

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