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A 6th grade student uses a protractor to measure some angles on a given worksheet. While doing so he/she measures an 80o angle as 100o, 60o angle as 120o, 70o angle as 110o and so on. What must be the most appropriate reason of this error?

A 6th grade student uses a protractor to measure some angles on a given worksheet. While doing so he/she measures an 80o angle as 100o, 60o angle as 120o, 70o angle as 110o and so on. What must be the most appropriate reason of this error? Correct Answer <span style="">He has not grasped the skill to read an angle in right direction using a protractor.</span>

Error is defined as the discrepancy between the correct measurement and what we have measured.

Key Points

  • How to measure angles using a protractor-
    • Step 1- Place the origin over the vertex of the angle you want to measure.
    • Step 2- Align one leg of the angle with the baseline by rotating the protractor.
    • Step 3- Up to the measurement on the protractor's arc, follow the opposite leg of the angle.
    • The measurement scale might appear confusing at first. Most protractors have 2 ruler grids, one on the inside and one on the outside of the arc. Both scales have the samAdditional Information A protractor is a semicircular measuring tool that is used to measure angles.

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