Construction of an Angle using a Protractor
We will learn how to construction of an angle using a
protractor.
Let us draw an angle whose measure is 60°. Use a ruler to draw
YZ.
Now, place the protractor over YZ such that the baseline of the protractor coincides with YZ and midpoint of the baseline coincides with point Y.
Mark a point X where you find 60 on the protractor. Now, join X and Y with the help of a ruler. We ∠XYZ = 60°.
Let us 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 point F. Read markings on
the outer semicircle of the protractor and mark point G on 120°.
Join F and G with the help of a ruler. We have ∠EFG = 120°.
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5th Grade Math Problems
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