Development of an Angle utilizing a Protractor

We’ll learn to building of an angle utilizing a
protractor.

1. Allow us to draw an angle whose measure is 60°. Use a ruler to attract
YZ. 

Now, place the protractor over YZ such that the baseline of the protractor coincides with YZ and midpoint of the baseline coincides with level Y.

Mark some extent X the place you discover 60 on the protractor. Now, be a part of X and Y with the assistance of a ruler. We ∠XYZ = 60°.

2. Allow us to draw an angle EFG measuring 120°. Draw a ray EF. Place
the protractor over EF such that the baseline of the protractor coincides with
EF and the midpoint of the baseline coincides with level F. Learn markings on
the outer semicircle of the protractor and mark level G on 120°.

Be part of F and G with the assistance of a ruler. We have now ∠EFG = 120°.

3. Draw an angle PQR = 45°

Step I: Draw a ray QR as proven within the determine.

Step II: Preserve the centre of the protractor at Q.

Step III: Regulate the bottom line of the protractor alongside (overrightarrow{QR}).

Step IV: Discover the ‘0’ on the size the place the ray crosses the protractor.

Step V: Observe alongside that scale and mark some extent ‘P’ in opposition to the 45° mark.

Step VI: Take away the protractor and draw a ray from the vertex Q to the purpose P.

Step VII: ∠PQR = 45° is the required angle.

3. Draw an angle XYZ = 90°

Step I: Draw a ray YZ as proven within the determine.

Step II: Preserve the centre of the protractor on the vertex Y.

Step III: Regulate the bottom line of the protractor alongside (overrightarrow{YZ}).

Step IV: Discover the ‘0’ on the size the place the ray crosses the protractor.

Step V: Observe alongside that scale and mark some extent ‘X’ in opposition to the 90°
mark.

Step VI: Take away the protractor and draw a ray from the vertex Y to the
level X.

Step VII: ∠XYZ = 90° is the required angle.

fifth Grade Math Issues 

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